EP0228097A2 - Rotierender Vortex-Separator für eine heterogene Flüssigkeit - Google Patents

Rotierender Vortex-Separator für eine heterogene Flüssigkeit Download PDF

Info

Publication number
EP0228097A2
EP0228097A2 EP86118142A EP86118142A EP0228097A2 EP 0228097 A2 EP0228097 A2 EP 0228097A2 EP 86118142 A EP86118142 A EP 86118142A EP 86118142 A EP86118142 A EP 86118142A EP 0228097 A2 EP0228097 A2 EP 0228097A2
Authority
EP
European Patent Office
Prior art keywords
liquid
inlet
chamber
separator
wall
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.)
Granted
Application number
EP86118142A
Other languages
English (en)
French (fr)
Other versions
EP0228097A3 (en
EP0228097B1 (de
Inventor
Yves "Les Grands Champs" Lecoffre
Jacques Woillez
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.)
Neyrtec Industrie Sa total Francaise Des Cie
Original Assignee
NEYRTEC SA
Total Compagnie Francaise des Petroles SA
Alstom SA
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 NEYRTEC SA, Total Compagnie Francaise des Petroles SA , Alstom SA filed Critical NEYRTEC SA
Priority to AT86118142T priority Critical patent/ATE68376T1/de
Publication of EP0228097A2 publication Critical patent/EP0228097A2/de
Publication of EP0228097A3 publication Critical patent/EP0228097A3/fr
Application granted granted Critical
Publication of EP0228097B1 publication Critical patent/EP0228097B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B3/00Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B11/00Feeding, charging, or discharging bowls
    • B04B11/02Continuous feeding or discharging; Control arrangements therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S494/00Imperforate bowl: centrifugal separators
    • Y10S494/901Imperforate bowl: centrifugal separators involving mixture containing oil

Definitions

  • the present invention relates to the separation of the two phases of a heterogeneous liquid.
  • a second quality is the compactness: Given the very high cost of the "on-board ton" on the platform, operators are looking for devices whose weight and volume are as low as possible.
  • the compactness of a device is mainly characterized by the residence time of the mixture in the device: the lower it is, the more the volume and the weight are reduced.
  • a third quality is flexibility in flow: During operation, the water flows to be treated can undergo variations from -50% to -100% of the nominal flow, for example, over times of a few minutes. It is therefore important that the separators can process these fluctuating flow rates without loss of oil removal efficiency. In addition, users are looking for devices with a maximum unit flow so that they can carry out the processing with a minimum number of devices.
  • the fourth quality is a small energy consumption: Energy consumption is not a crucial problem on an operating platform, but the available pressures are often limited to a few bars. It can nevertheless be considered that a device which consumes energy does so in the form of a pressure drop with the appearance of zones of intense hydraulic shear which will split the drops of oil into droplets so small that they will become inseparable. It can therefore be roughly estimated that the lower the pressure drop necessary to ensure the separation, the better the efficiency of the device.
  • More or less similar qualities are desirable for other operations such as the dehydration of crude oil and degassing of liquids, and, more generally in all industrial operations involving either hydrocyclones or centrifuges.
  • the object of the present invention is to obtain in an easy manner an improved separation efficiency compared to known separators.
  • the present invention leaves velocity gradients, especially in the vicinity of said axial region of the vortex.
  • the inevitable turbulence in this area has reduced drawbacks there because of the very high value that the centrifugal force takes there.
  • the speed gradients in particular the radial gradient of the circumferential speed.
  • FIG. 1 represents a general view in axial section of a separator according to the invention.
  • FIG. 2 represents a perspective view of the inlet accelerator guides and of the injection conduits, of this same separator with partial cutaway of its side wall.
  • the ten inner edges are arranged according to the generatrices of a cone open towards this tube 19 to receive the inlet liquid. The latter is driven in rotation and towards the periphery, until the extension upstream of the wall 10.
  • injection channels 30 extending axially over the axial interval between the guides 20 and the inlet 4 of the chamber 2.
  • These channels are formed by axial radial walls 50 fixed on the cylindrical lateral surface of a part 52 itself fixed to the radial edges downstream of the guides 20.
  • This part extends coaxially inside the cylindrical extension of the wall 10. Downstream of this part is fixed coaxially a conical entry warhead 38 which penetrates into the chamber 2 and which on the one hand forms with the wall 10 an annular duct of increasing section and which on the other hand stabilizes the vortex in this chamber.
  • the downstream end of the chamber 2 is occupied by a part 36 which in particular forms the aforementioned outlet diaphragm, the central opening of which constitutes the main outlet opening for the deoiled water. Downstream of this opening, the interior surface of this part is first conical to form a divergent 42, then it becomes cylindrical in its downstream part 46 to form a rotating outlet chamber 44 opening into a fixed outlet chamber. The latter communicates with a fixed main outlet pipe 45 through which the deoiled water is removed from the separator.
  • This downstream part 46 constitutes at the same time a rigid downstream extension of the wall 10 and externally carries two ball bearings 48 which constitute the downstream bearing previously mentioned and are mounted in a fixed hollow downstream body 47. This body forms said fixed outlet chamber from which the main outlet pipe 45 starts.
  • the secondary outlet opening for the oil is constituted by a fixed tube 28 which passes axially through the downstream body 47 and the outlet diaphragm 36.
  • this involved treating a water flow rate of 1 1 / s charged with a proportion of petroleum oil of between 0.1% and 1%, this oil having a density of approximately 0.85 .
  • the separation chamber then had a length of 500mm and an internal diameter of 60mm. It was rotating at 1800 revolutions / minute.
  • the injection channels had a length of 50mm and a radial transverse dimension of 5mm, their circumferential transverse dimension being approximately 9mm.
  • the main outlet opening formed in the diaphragm had a diameter of 20mm, the secondary outlet tube having an inside diameter of 8mm.
  • the inlet duct had a diameter of 30mm

Landscapes

  • Centrifugal Separators (AREA)
  • Cyclones (AREA)
  • Saccharide Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Steroid Compounds (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Physical Water Treatments (AREA)
EP86118142A 1986-01-02 1986-12-30 Rotierender Vortex-Separator für eine heterogene Flüssigkeit Expired - Lifetime EP0228097B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86118142T ATE68376T1 (de) 1986-01-02 1986-12-30 Rotierender vortex-separator fuer eine heterogene fluessigkeit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8600015 1986-01-02
FR8600015A FR2592324B1 (fr) 1986-01-02 1986-01-02 Separateur tournant a vortex pour liquide heterogene.

Publications (3)

Publication Number Publication Date
EP0228097A2 true EP0228097A2 (de) 1987-07-08
EP0228097A3 EP0228097A3 (en) 1988-10-05
EP0228097B1 EP0228097B1 (de) 1991-10-16

Family

ID=9330804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86118142A Expired - Lifetime EP0228097B1 (de) 1986-01-02 1986-12-30 Rotierender Vortex-Separator für eine heterogene Flüssigkeit

Country Status (13)

Country Link
US (1) US4702837A (de)
EP (1) EP0228097B1 (de)
JP (1) JPH01119354A (de)
KR (1) KR930009499B1 (de)
AT (1) ATE68376T1 (de)
AU (1) AU585793B2 (de)
CA (1) CA1285539C (de)
DE (1) DE3682040D1 (de)
ES (1) ES2026846T3 (de)
FR (1) FR2592324B1 (de)
GR (1) GR3003261T3 (de)
NO (1) NO170572C (de)
SG (1) SG21193G (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977917A (zh) * 2014-05-28 2014-08-13 常州大学 旋流器-离心机组合式液液分离机

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880701135A (ko) * 1986-04-07 1988-07-25 캐롤 노엘 다중상의 혼합물 분류장치
SE455623B (sv) * 1986-11-28 1988-07-25 Alfa Laval Separation Ab Sett och apparat for senkning av trycket i en vetskeblandning
US5224604A (en) * 1990-04-11 1993-07-06 Hydro Processing & Mining Ltd. Apparatus and method for separation of wet and dry particles
US5104541A (en) * 1990-05-10 1992-04-14 Daniel William H Oil-water separator
US5128033A (en) * 1990-07-26 1992-07-07 Eberhardt H Alfred Oil separator
US5186332A (en) * 1991-06-14 1993-02-16 The Black Clawson Company Paper stock screening apparatus having heavy rejects trap
AU656957B2 (en) * 1991-07-09 1995-02-23 Krebs Engineers Hydrocyclone separator with turbulence shield
US5180493A (en) * 1991-09-16 1993-01-19 Krebs Engineers Rotating hydrocyclone separator with turbulence shield
US5484521A (en) * 1994-03-29 1996-01-16 United Technologies Corporation Rotary drum fluid/liquid separator with energy recovery means
DE9415521U1 (de) * 1994-09-24 1995-02-02 Gall, Holger, 21629 Neu Wulmstorf Vorrichtung zur mechanischen Gewinnung von pflanzlichem Öl
US5595660A (en) * 1995-06-23 1997-01-21 Basf Corporation Plate-type separator
CA2247838C (en) 1998-09-25 2007-09-18 Pancanadian Petroleum Limited Downhole oil/water separation system with solids separation
US6346069B1 (en) 1999-08-06 2002-02-12 Separation Process Technology, Inc. Centrifugal pressurized separators and methods of controlling same
US6719681B2 (en) 1999-08-06 2004-04-13 Econova, Inc. Methods for centrifugally separating mixed components of a fluid stream
US6607473B2 (en) 1999-08-06 2003-08-19 Econova Inc. Methods for centrifugally separating mixed components of a fluid stream under a pressure differential
US6599422B2 (en) * 2001-06-20 2003-07-29 Maritime Solutions Technology, Inc. Separator for liquids containing impurities
NO330397B1 (no) * 2005-07-11 2011-04-04 Sinvent As Apparat for separasjon av en fluidstromning.
FR2919206B1 (fr) * 2007-07-27 2009-10-16 Total Sa Separateur a ecoulement cyclonique
GB0724572D0 (en) 2007-12-17 2008-01-30 Specialist Process Technologie A separation device
FR2954187B1 (fr) * 2009-12-18 2014-08-01 Total Sa Separateur a ecoulement cyclonique.
US8485367B2 (en) * 2010-05-28 2013-07-16 General Electric Company Fluid filtration apparatus for appliances
CN103203196B (zh) * 2013-04-23 2015-03-18 黑龙江八一农垦大学 高粘度流体混合器
CN106890608B (zh) * 2015-12-18 2019-09-27 彭宗平 具导流板的封闭式流道反应槽系统
KR101868962B1 (ko) * 2016-04-06 2018-06-19 강양수 석션장치용 세퍼레이터
US20180029048A1 (en) * 2016-07-27 2018-02-01 General Electric Company Centrifugal separators for use in separating a mixed stream of at least two fluids
CN106733234A (zh) * 2017-01-12 2017-05-31 北京大漠石油工程技术有限公司 超重力轴向旋流分离机
KR102660245B1 (ko) * 2023-10-24 2024-04-24 (주)원하이테크 냉열기 발생 효율이 증대된 볼텍스 튜브

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2138468A (en) * 1936-03-17 1938-11-29 Sharples Specialty Co Centrifugal separator
US2259665A (en) * 1939-02-10 1941-10-21 Sharples Corp Centrifugal separator
DE1186412B (de) * 1962-11-27 1965-01-28 Westfalia Dinnendahl Groeppel Vorrichtung zum Trennen von Feststoffen und Fluessigkeiten mittels Fliehkraft
CA949941A (en) * 1970-05-08 1974-06-25 Queen's University At Kingston Vortex clarifier
FR2478489B1 (fr) * 1980-03-21 1985-08-30 Centre Tech Ind Papier Procede et dispositif pour la separation de particules dans un fluide, notamment pour l'epuration de suspensions papetieres

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103977917A (zh) * 2014-05-28 2014-08-13 常州大学 旋流器-离心机组合式液液分离机

Also Published As

Publication number Publication date
KR870006930A (ko) 1987-08-13
EP0228097A3 (en) 1988-10-05
EP0228097B1 (de) 1991-10-16
GR3003261T3 (en) 1993-02-17
JPH01119354A (ja) 1989-05-11
FR2592324A1 (fr) 1987-07-03
ATE68376T1 (de) 1991-11-15
NO865219L (no) 1987-07-03
DE3682040D1 (de) 1991-11-21
AU585793B2 (en) 1989-06-22
NO170572B (no) 1992-07-27
FR2592324B1 (fr) 1988-03-18
KR930009499B1 (ko) 1993-10-06
CA1285539C (fr) 1991-07-02
NO865219D0 (no) 1986-12-22
NO170572C (no) 1992-11-04
US4702837A (en) 1987-10-27
AU6704186A (en) 1987-07-09
SG21193G (en) 1993-06-11
ES2026846T3 (es) 1992-05-16

Similar Documents

Publication Publication Date Title
EP0228097B1 (de) Rotierender Vortex-Separator für eine heterogene Flüssigkeit
CA2637643C (fr) Separateur a ecoulement cyclonique
EP0596764B1 (de) Vorrichtung und Verfahren zur Durchführung der Phasentrennung durch Filtration und Zentrifugation
CA2310139C (fr) Dispositif et procede pour la separation d'un melange heterogene
FR2632215A1 (fr) Dispositif de separation a tube a tourbillon
FR2632216A1 (fr) Dispositif de separation a tube a tourbillon
CA2173087C (fr) Separateur a cyclone ayant un coalesceur incorpore
FR2545005A1 (fr) Centrifugeuse a cuve solide, a rotation continue et de grande capacite
FR2645184A1 (fr) Appareil de fluidisation, de degazage et de pompage d'une suspension d'une matiere cellulosique fibreuse
EP0104966B1 (de) Zentrifuge mit Energierückgewinnung
WO2011073550A1 (fr) Séparateur à écoulement cyclonique
CA1331956C (fr) Dispositif pour la separation selective de particules dans un liquide, notamment pour l'epuration de suspensions papetieres
FR2690089A1 (fr) Séparateur triphasique à cyclone.
FR2460701A1 (fr) Dispositif de separation de matieres solides dans un courant de liquide
EP0078727B1 (de) Einrichtung zum Filtrieren von, in einer Flüssigkeit sich befindenden, vielartigen Verunreinigungen
FR2489716A1 (fr) Centrifugeuse pour separation de matieres solides et de deux liquides, notamment dans la preparation de l'huile d'olive
FR2588778A1 (fr) Separateur a vortex liquide
EP2809416A1 (de) Vorrichtung zum trennen zweier nichtmischbarer flüssigkeiten unterschiedlicher dichte durch zentrifugierung
FR2652762A1 (fr) Dispositif destine a separer des fluides et des solides d'un fluide porteur.
FR2524821A1 (fr) Appareil a vortex libre pour enlever des gaz et des solides d'un fluide de forage
FR2613956A1 (fr) Procede et dispositif de separation centrifuge d'un melange de plusieurs phases
BE486877A (de)
CA2383286C (fr) Dispositif et methode de separation comportant un electro-coalesceur tubulaire
WO1999025480A1 (fr) Dispositif et procede pour la separation d'un melange heterogene
FR2787836A1 (fr) Impulseur diphasique helico-radio-axial avec carenage incurve

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: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890403

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TOTAL COMPAGNIE FRANCAISE DES PETROLES

Owner name: GEC ALSTHOM SA

17Q First examination report despatched

Effective date: 19900130

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TOTAL COMPAGNIE FRANCAISE DES PETROLES

Owner name: NEYRTEC SA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 68376

Country of ref document: AT

Date of ref document: 19911115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3682040

Country of ref document: DE

Date of ref document: 19911121

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent 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: GR

Ref legal event code: FG4A

Free format text: 3003261

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 86118142.8

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE QUOTA;NEYRTEC INDUSTRIE

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: NEYRTEC INDUSTRIE (TITULAR DEL 50%)

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: TOTAL COMPAGNIE FRANCAISE DES PETROLES;NEYRTEC SA

NLS Nl: assignments of ep-patents

Owner name: NEYRTEC INDUSTRIE SA;TOTAL COMPAGNIE FRANCAISE DES

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: GEC ALSTHOM SALES NETWORK SA

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

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

Ref country code: GB

Payment date: 20001003

Year of fee payment: 15

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

Ref country code: BE

Payment date: 20001023

Year of fee payment: 15

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

Ref country code: SE

Payment date: 20001102

Year of fee payment: 15

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

Ref country code: GR

Payment date: 20001129

Year of fee payment: 15

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

Ref country code: LU

Payment date: 20001201

Year of fee payment: 15

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

Ref country code: CH

Payment date: 20001207

Year of fee payment: 15

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

Ref country code: ES

Payment date: 20001218

Year of fee payment: 15

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

Ref country code: DE

Payment date: 20001221

Year of fee payment: 15

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

Ref country code: FR

Payment date: 20001227

Year of fee payment: 15

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

Ref country code: AT

Payment date: 20001229

Year of fee payment: 15

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

Ref country code: NL

Payment date: 20001231

Year of fee payment: 15

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

Ref country code: LU

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

Effective date: 20011230

Ref country code: GB

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

Effective date: 20011230

Ref country code: AT

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

Effective date: 20011230

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

Ref country code: SE

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

Effective date: 20011231

Ref country code: LI

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

Effective date: 20011231

Ref country code: GR

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

Effective date: 20011231

Ref country code: CH

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

Effective date: 20011231

Ref country code: BE

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

Effective date: 20011231

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

BERE Be: lapsed

Owner name: TOTAL CIE FRANCAISE DES PETROLES

Effective date: 20011231

Owner name: NEYRTEC INDUSTRIES

Effective date: 20011231

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

Ref country code: NL

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

Effective date: 20020701

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: 20020702

EUG Se: european patent has lapsed

Ref document number: 86118142.8

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: 20011230

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

Ref country code: FR

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

Effective date: 20020830

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20020701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: ES

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

Effective date: 20021231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030113

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051230