EP0622112B1 - Pale d'agitation - Google Patents

Pale d'agitation Download PDF

Info

Publication number
EP0622112B1
EP0622112B1 EP94106477A EP94106477A EP0622112B1 EP 0622112 B1 EP0622112 B1 EP 0622112B1 EP 94106477 A EP94106477 A EP 94106477A EP 94106477 A EP94106477 A EP 94106477A EP 0622112 B1 EP0622112 B1 EP 0622112B1
Authority
EP
European Patent Office
Prior art keywords
agitator
local
plates
cylinder
bent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94106477A
Other languages
German (de)
English (en)
Other versions
EP0622112A1 (fr
Inventor
Yasuo Noda
Hideo Noda
Takaya Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Chemical Engineering Co Ltd
Original Assignee
Kansai Chemical Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kansai Chemical Engineering Co Ltd filed Critical Kansai Chemical Engineering Co Ltd
Publication of EP0622112A1 publication Critical patent/EP0622112A1/fr
Application granted granted Critical
Publication of EP0622112B1 publication Critical patent/EP0622112B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/15—Stirrers with tubes for guiding the material

Definitions

  • the present invention relates to an agitator blade and more particularly to an agitator blade which is capable of mixing fluids efficiently and reliably.
  • agitator blades are turbine blades, oar blades, marine blades and ribbon blades.
  • turbine blades oar blades
  • marine blades and ribbon blades.
  • a high degree of mixing close to 1 can be reached in a relatively short time without trouble with a single agitator blade.
  • an agitator blade which is simple in construction and can achieve a high degree of mixing easily and reliably and with a minimum amount of driving power, and which comprises a plurality of local agitators for simultaneous agitation at multiple locations.
  • DE-U-85 28 381 discloses an agitator blade being mounted on a rotatable agitator shaft.
  • the agitator blade comprises a mounting frame on which radially oriented hollow cylinders are mounted.
  • the hollow cylinders have upwardly inclined inner edges.
  • the outer axial ends of the cylinders lie in a plane which is oriented perpendicularly to the central axis of the cylinders.
  • SU-A-1 278 010 discloses an industrial mixer which comprises a vertical rotating shaft carrying a set of tubes each having a bent top.
  • GB-A-749 327 discloses an agitator plate being mounted on a rotating shaft.
  • the agitator plate comprises a disk-like mounting frame on which tangentially oriented hollow pipes are mounted.
  • SU-A-1 005 870 is directed to a mixer having a conical ring on a radial agitator arm. Differently oriented mixing plates are provided on the inner peripheral surface of the ring.
  • the present invention provides an agitator plate in accordance with claim 1.
  • the present invention concerns an agitator blade in which local agitators are mounted to a mounting frame secured to an agitator shaft, and which achieves a high degree of mixing.
  • the local agitators themselves are not directly driven and require no driving power.
  • the only member that is driven is the agitator shaft.
  • Such local agitators may be used as a flow mixer.
  • the flow mixer as explained in "Kagaku Kogaku Binran (or Chemical Engineering Handbook)" compiled by Kagaku Kogaku Kyokai (Chemical Engineers Association) and published by Maruzen Kabushiki Kaisha in 1988, page 567, is a device that makes use of a kinetic energy of fluid flow in mixing the fluid and which is installed in a flow passage of the fluid being transported.
  • examples of the local agitator include a cylinder incorporating one or more plates.
  • the plate may be twisted either in a positive or forward direction (i.e. clockwise as seen from the front end of the twisted plate) or in a reverse direction (i.e. counterclockwise as seen from the front end of the twisted plate).
  • the twist angle of the plate (an angle between one end and the other end of the twisted plate) may be set anywhere in the range of 90 to 180 degrees.
  • they are arranged in series end-to-end, with their axes substantially aligned along the axis of the cylinder (the cylinder axis passing through the opposite openings of the cylinder).
  • the plate may be formed by bending a square or rectangular plate at least once along a distinct bending line at or near the center, or by curving the plate at least once by bringing the opposite peripheral sides toward each other to cause the central portion of the plate between the opposing peripheral sides to form a vertex.
  • a plurality of bent plates which may be disposed in an alternately inverted relationship with one another so that the facing bent peripheral sides of the adjacent bent plates cross each other, may be installed in a rectangular parallelepiped- or a cube-shaped cylinder that circumscribes them.
  • the plurality of bent plates are arranged side by side in the cylinder with their axes (virtually perpendicular to the bending lines or vertices) extending substantially parallel to the axis of the cylinder.
  • the bending lines or vertices of the bent plates are placed in contact with the upper and lower internal surfaces, alternately, of the cylinder that circumscribes the bent plates.
  • the bent plates may have their facing peripheral sides in contact or spaced from each other.
  • the plates incorporated in the cylinder may include, for example, plates curved with a small curvature and corrugated plates with small pitches in addition to flat plates. Normally, the flat plates are virtually square or rectangular.
  • the plurality of flat plates may be so disposed that their facing peripheral sides cross each other.
  • the flat plates may be installed inside a cylinder that inscribes them.
  • the flat plates may be placed in contact with each other at their facing peripheral sides or spaced from each other.
  • the inner surface of the cylinders of the local agitators and the surface of the plates may be either smooth or rough, or may be formed with small depressions and projections in such patterns as waves, dots or small circles.
  • the cylinder of the local agitator may take an arbitrary shape as long as it ensures that fluids to be mixed can pass through the cylinder.
  • the transverse cross section of the cylinder (a cross section perpendicular to the axis of the cylinder that normally corresponds to the shape of the opening) may take a polygonal shape such as a triangle, quadrangle, pentagon and hexagon, or a circular shape such as a circle, oval and ellipse, depending on the shape, number and arrangement of the plates, installed in the cylinder.
  • the transverse cross section of the cylinder is preferably a circle when accommodating twisted plates. In accommodating bent plates and flat plates, a square or rectangular transverse cross section is preferred.
  • the cylinder of the local agitator may be formed either as a straight pipe or a curved pipe with a small curvature.
  • the mounting frame may be formed as a flat plate member, a curved plate member, a square rod member, a round rod member, a shape steel member, and a structure using these members.
  • the size and number of the local agitators to be mounted on the mounting frame are determined according to the kind and property of fluids to be mixed, the size and shape of the tank, and the target degree of mixing.
  • a single mounting frame may be mounted with a plurality of local agitators.
  • the plurality of local agitators mounted on one or more mounting frames may employ the same construction or differing constructions.
  • a plurality of local agitators may be mounted on a single plate-like mounting frame.
  • the size of the mounting frame itself is determined according to the number of local agitators to be mounted.
  • the local agitators are installed on the mounting frame in such a way as to allow the fluid to pass therethrough from one opening to the other during the operation.
  • the local agitators which may accommodate a plurality of bent plates or flat plates in the cylinder, are mounted on the mounting frame in such a way that the boundary plane on which the facing peripheral sides of the adjacent bent plates or flat plates lie and cross each other can be oriented at any angle, from parallel to perpendicular, with respect to the rotating plane of the agitator blade.
  • the direction of the local agitator (i.e. the direction of axis passing through the opposing openings of the cylinder) on its rotating plane is set in the radial direction of a circle whose radius is the distance from the center of the rotating plane to the local agitator, according to the viscosity of the fluid to be mixed and the agitation speed, so as to obtain as high a degree of fluid mixing as possible.
  • the angle between the axis of the local agitator and its rotating plane is also determined arbitrarily.
  • Rear side of a leading end of a local agitator against rotating direction is be cut off in order to have the leading end inclined.
  • a plurality of local agitators may be arranged in parallel, which are slightly apart or connected.
  • the local agitator is preferably constructed such that its direction on a plane perpendicular to the rotating plane (vertical direction) can be changed freely. This may be realized, for example, by rotatably mounting the local agitator to the mounting frame with a screw or other means.
  • the agitator blade of this invention can also be used for agitation in small tanks.
  • agitator blades of this invention are installed in the tank.
  • a plurality of agitator blades may be secured either to the same agitator shaft or separate shafts.
  • a gas supplied into the tank forms bubbles, which are broken into smaller bubbles increasing the contact surface area with the fluid.
  • the agitator blade of this invention is suitably applied for the mixing between different liquids, between liquid and solid, between liquid and gas, between different gases, between liquid, solid and gas.
  • a local agitator 3 shown in Figure 1 and Figure 2 has two twisted plates 32, 33 installed inside a cylinder body 31 with their peripheries in contact with the inner circumferential surface of the cylinder body 31.
  • the twisted plate 32 is made by twisting a rectangular plate--whose shorter peripheral side and longer peripheral side are substantially equal to the inner diameter and one-half the length, respectively, of the cylinder body 31--in a positive or forward direction so that the short peripheral side 321 at one end and the short peripheral side 322 at the other end are nearly at right angles.
  • the twisted plate 33 is also formed in the similar way.
  • These twisted plates 32, 33 are installed inside the cylinder body 31 with the facing short peripheral sides 322, 331 set approximately 90 degrees from each other, with the axes of the two twisted plates virtually aligned, and with the two twisted plates arranged in series, end-to-end, in the direction of axis of the local agitator's cylinder body 31 and inscribed in the inner circumferential surface of the cylinder body 31.
  • These twisted plates 32, 33 form a complex flow path in the cylinder body 31 of the local agitator 3.
  • the agitator shaft is rotated to drive the local agitators, the fluids to be mixed are drawn from one opening of the cylinder body 31 (for example, left-side opening in Figure 2) into the cylinder body 31, in which they are forced to pass through a complex flow path before being discharged from the other opening.
  • one opening of the cylinder body 31 for example, left-side opening in Figure 2
  • a local agitator 6 shown in Figure 3 and Figure 4 has twisted plates 62, 63 inscribed in the cylinder body 61. These twisted plates are arranged in series along the axis of the cylinder body 61 and in contact, end-to-end, with each other, with the facing short peripheral sides 622, 631 set at approximately 90 degrees from each other.
  • the two twisted plates 62, 63 are essentially similar to those used in the local agitator 3 of Figure 1 except that they are twisted in opposite directions at the twist angle of 180 degrees.
  • An agitator blade 7 shown in Figures 5 through 7 has four local agitators 72 mounted one on each of four support rods 71, which are spaced 90 degrees apart and secured to the agitator shaft 12.
  • the local agitator 72 has two bent plates 722, 723 installed in a rectangular cylinder 721 whose opening is rectangular.
  • the bent plates 722, 723 are formed by bending rectangular flat plates along bending lines 7221, 7231. These two bent plates 722, 723 have their facing peripheral sides 7222, 7232 in contact with each other and are disposed in an inverted relationship with each other. They are installed in the rectangular cylinder 721 so that the cylinder 721 circumscribes them.
  • the two bent plates 722, 723 are placed side by side with their axes virtually parallel to the axis of the rectangular cylinder 721.
  • bent plates 722, 723 form a complex flow passage inside the rectangular cylinder 721 of the local agitator.
  • the local agitator 72 is mounted on the support rod 71 in such a manner that a boundary plane 724 containing the facing peripheral sides 7222, 7232 of the adjacent two bent plates 722, 723 installed inside the local agitator is perpendicular to the rotating plane of the agitator blade 7, to which the local agitator 72 is mounted.
  • a bolt secured vertically to the top outer surface of the rectangular cylinder 721 is passed through a hole in the support rod 71 (bolt and hole are not shown) and fastened with a butterfly nut so that the local agitator 72 is rotatable with respect to the support rod 71.
  • the local agitator 72 are radially arranged to face the agitator shaft 12.
  • the fluids to be mixed are forced into the rectangular cylinder 721 from one opening, flow through a complicated passage formed in the cylinder 721 and then are forced out from the other opening of the cylinder 721.
  • a bent plate 81 shown in Figure 8 is curved to cause the opposite short peripheral sides 811, 812 of a rectangular plate to come near each other with the central portion raised as a vertex 813.
  • Another bent plate 82 is also curved in the similar manner. These two bent plates 81 and 82 are disposed side by side in an inverted relationship so that their vertices 813 and 823 project in opposite directions. These bent plates are placed inside the rectangular cylinder with their facing long peripheral sides 814 abd 824 in contact.
  • a bent plate 91 shown in Figure 9 and Figure 10 are formed of a rectangular plate bent along bending lines 911, 912, 913, 914, 915.
  • a second bent plate 92 is also a rectangular plate bent along bending lines 921, 922, 923, 924, 925.
  • the third bent plate 93 is also a rectangular plate, which is likewise bent along bending lines 931, 932, 933, 934 and 935. In other respects, these three bent plates are essentially the same as those shown in Figures 5 through 7.
  • a local agitator 101 shown in Figures 11 through 13 contain two rectangular plates 1011 and 1012.
  • the rectangular plates are stacked on their long peripheral sides so that they cross each other at an angle with their long peripheral sides 10111, 10121 in contact at the central portion. They are installed in a rectangular cylinder 1013 so that the cylinder circumscribes them.
  • a boundary plane 1014 containing the long peripheral sides 10111, 10121 is parallel to the rotating plane of the local agitator.
  • this local agitator 101 is essentially similar to that shown in Figures 5 through 7.
  • a support rod 103 is secured to the side of the rectangular cylinder 1013 with a thumbscrew, about which the local agitator can be rotated in a vertical plane.
  • the local agitators 132, 133 are made of square cylinders 1323, 1333 wherein a pair of two bent plates 1321, 1322 and a pair of bent plates 1331, 1332, reversely directed each other, are put in. Rear side of a leading end of the local agitator against rotating direction is cut off in order to have the leading end inclined and to have outer opening sweeped back.
  • 134 is a boss mounted around the hole 1311 for an agitator shaft.
  • the agitator blade of this invention offers the following advantages. That is, when applied for agitation and mixing processes, the agitator blade of this invention can realize a high degree of mixing easily and reliably in a short period of time and with a small driving power. Further, the construction of this agitator blade is simple.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (3)

  1. Pale d'agitateur comportant :
    un châssis de montage ayant des côtés opposés et étant fixé à un arbre d'agitateur pouvant tourner,
    au moins un agitateur local ayant des cylindres montés sur le châssis de montage,
    ledit au moins un agitateur local étant disposé radialement par rapport à l'arbre d'agitateur, et ayant des première et seconde extrémités axiales, les première et seconde extrémités étant toutes les deux ouvertes par rapport au châssis de montage et à distance de l'arbre d'agitateur, la première extrémité axiale étant disposée plus proche de l'arbre d'agitateur et la seconde extrémité axiale étant disposée Plus éloignée de l'arbre d'agitateur,
    chacune des première et seconde extrémités axiales ayant un bord d'attaque et un bord de queue par rapport à la direction de rotation, et
    la distance radiale du bord d'attaque de la seconde extrémité axiale à l'arbre d'agitateur étant plus grande que la distance radiale du bord de queue de la seconde extrémité axiale à l'arbre d'agitateur.
  2. Pale d'agitateur suivant la revendication 1, dans lequel les cylindres sont des cylindres de section carrée.
  3. Pale d'agitateur suivant l'une des revendications 1 ou 2, dans lequel chaque agitateur local contient intérieurement au moins une plaque.
EP94106477A 1993-04-30 1994-04-26 Pale d'agitation Expired - Lifetime EP0622112B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP12484393 1993-04-30
JP124843/93 1993-04-30
JP12484393 1993-04-30
JP28565393 1993-10-21
JP5285653A JPH078776A (ja) 1993-04-30 1993-10-21 攪拌翼
JP285653/93 1993-10-21

Publications (2)

Publication Number Publication Date
EP0622112A1 EP0622112A1 (fr) 1994-11-02
EP0622112B1 true EP0622112B1 (fr) 2000-03-01

Family

ID=26461422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94106477A Expired - Lifetime EP0622112B1 (fr) 1993-04-30 1994-04-26 Pale d'agitation

Country Status (3)

Country Link
EP (1) EP0622112B1 (fr)
JP (1) JPH078776A (fr)
DE (1) DE69423122T2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4681131B2 (ja) * 2001-01-26 2011-05-11 宝ホールディングス株式会社 酒類の製造装置
GB2437930A (en) 2006-05-10 2007-11-14 Lucite Int Uk Ltd Mixing apparatus
JP5224591B2 (ja) * 2006-08-08 2013-07-03 株式会社カクジン 撹拌棒およびそれを備えた撹拌機
DE102008063393B3 (de) * 2008-12-30 2010-06-02 Martin Hirzel Bördelrührer
CN107685455B (zh) * 2017-10-23 2023-04-28 河南科技大学 一种搅拌桨及使用该搅拌桨的真空注型机
CN112662888B (zh) * 2020-12-10 2022-06-28 安徽华铂再生资源科技有限公司 一种铅酸蓄电池的铅泥回收工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB401583A (en) * 1933-04-10 1933-11-16 Kuehnle Kopp Kausch Ag Stirrer mechanism
GB749327A (en) * 1953-12-18 1956-05-23 Osborne Engineers Ltd Improvements in rotary agitators
FR1157156A (fr) * 1956-08-03 1958-05-27 Kodak Pathe Nouveau procédé de dispersion d'un fluide à l'état très divisé dans une masse liquide et dispositif pour la mise en oeuvre de ce procédé
CA962998A (en) * 1971-03-15 1975-02-18 Colortex S.A. Centrifugal-action fluid propelling mixer
FR2482470A1 (fr) * 1980-05-13 1981-11-20 Melange Ste Europ Appareil rotatif, destine notamment a realiser des operations de melange
SU1005870A1 (ru) * 1981-02-25 1983-03-23 Дзержинский филиал Научно-исследовательского и конструкторского института химического машиностроения Реактор дл полимеризации в жидкостных дисперсных системах
SU1095973A1 (ru) * 1982-11-22 1984-06-07 Bugaj Nikolaj Мешалка дл жидких сред
SU1278010A1 (ru) * 1985-02-04 1986-12-23 Днепропетровский Ордена Трудового Красного Знамени Химико-Технологический Институт Перемешивающее устройство
DE8528381U1 (de) * 1985-10-05 1985-11-14 Maschinenfabrik Meyer Lohne GmbH, 2842 Lohne Vorrichtung zum Mischen von Flüssigfutter
CH675215A5 (fr) * 1988-02-08 1990-09-14 Kurt Walter Wyss

Also Published As

Publication number Publication date
EP0622112A1 (fr) 1994-11-02
DE69423122T2 (de) 2000-09-28
JPH078776A (ja) 1995-01-13
DE69423122D1 (de) 2000-04-06

Similar Documents

Publication Publication Date Title
AU592923B2 (en) Mixing apparatus and method of fabricating same
EP0469302B1 (fr) Agitateur pour mélanger et systèmes d'agitateur pour mélanger des liquides et suspensions de liquide ayant une large plage de viscosités
US5813837A (en) Axial-flow impeller for mixing liquids
EP2525903B1 (fr) Dispositif de mélange et conditionnement à flux statique
US20040174769A1 (en) Aeration apparatus and method
USRE34386E (en) Impeller
US5158434A (en) Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having a wide range of viscosities
EP0622112B1 (fr) Pale d'agitation
WO1989012496A1 (fr) Appareil a melanger
CA1065845A (fr) Lames de melangeur fonctionnant selon un plan horizontal cylindrique
US6896246B2 (en) Aeration apparatus and method
US20040217492A1 (en) Radial disc impeller apparatus and method
US5785424A (en) Agitator blade having agitators with open first and second ends and inner fabrics therein
US4334826A (en) Surface aerator impeller
US20090141586A1 (en) Mixing apparatus
CA3149930A1 (fr) Systeme de dispersion de gaz
US5407271A (en) Integrated rotary mixer and disperser head
JP7408049B1 (ja) 撹拌翼、撹拌方法、撹拌翼の組立方法
CN110141984A (zh) 一种新型车漆搅拌桨
JP3174235B2 (ja) 攪拌翼
JP2001062484A (ja) 縦軸型曝気攪拌装置
EP2865806A1 (fr) Procédé et appareil pour agiter un fluide dans une cuve
US4249863A (en) Surface aerator impeller
JPH03217222A (ja) 撹拌羽根
CH666663A5 (de) Vorrichtung zum erzeugen einer gerichteten fluessigkeitsstroemung.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE DK FR GB IT LI SE

17P Request for examination filed

Effective date: 19950320

17Q First examination report despatched

Effective date: 19960621

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE DK FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000301

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG PATENTANWAELTE

REF Corresponds to:

Ref document number: 69423122

Country of ref document: DE

Date of ref document: 20000406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000601

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100325

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100521

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100421

Year of fee payment: 17

Ref country code: DE

Payment date: 20100430

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20100414

Year of fee payment: 17

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: KANSAI CHEMICAL ENGINEERING CO. LTD

Free format text: KANSAI CHEMICAL ENGINEERING CO. LTD#9-7, MINAMINANAMATSU-CHO 2-CHOME#AMAGASAKI-SHI HYOGO 660 (JP) -TRANSFER TO- KANSAI CHEMICAL ENGINEERING CO. LTD#9-7, MINAMINANAMATSU-CHO 2-CHOME#AMAGASAKI-SHI HYOGO 660 (JP)

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69423122

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69423122

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110426

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110430

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110430

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110426

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110426

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111031