EP0082221B1 - Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode - Google Patents

Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode Download PDF

Info

Publication number
EP0082221B1
EP0082221B1 EP81201392A EP81201392A EP0082221B1 EP 0082221 B1 EP0082221 B1 EP 0082221B1 EP 81201392 A EP81201392 A EP 81201392A EP 81201392 A EP81201392 A EP 81201392A EP 0082221 B1 EP0082221 B1 EP 0082221B1
Authority
EP
European Patent Office
Prior art keywords
electrode
edge
jaws
inner jaws
protector
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
Application number
EP81201392A
Other languages
English (en)
French (fr)
Other versions
EP0082221A1 (de
Inventor
Peter Berger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT81201392T priority Critical patent/ATE18580T1/de
Priority to EP81201392A priority patent/EP0082221B1/de
Priority to DE8181201392T priority patent/DE3174104D1/de
Publication of EP0082221A1 publication Critical patent/EP0082221A1/de
Application granted granted Critical
Publication of EP0082221B1 publication Critical patent/EP0082221B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof

Definitions

  • This invention relates to an edge protector for electrodes, e.g. cathode matrix plates as are used in the electrodeposition of metal and, more particularly, in the production of electrodeposits upon, and their subsequent integral detachment from, so-called master-cathodes or matrices in the form of flat plates or sheets, as practised in such processes as electroforming, electrolytic extraction ("electrowinning") and refining of metals.
  • edge protector for electrodes e.g. cathode matrix plates as are used in the electrodeposition of metal and, more particularly, in the production of electrodeposits upon, and their subsequent integral detachment from, so-called master-cathodes or matrices in the form of flat plates or sheets, as practised in such processes as electroforming, electrolytic extraction ("electrowinning") and refining of metals.
  • starting sheets in electrowinning and electro-refining of such metals as copper, zinc, nickel and cobalt.
  • a copper starting sheet serves as the cathode in the production of electrolytic copper, forming the nucleus of the electrodeposited end-product.
  • This starting sheet is itself produced by electro- deposition onto a matrix plate from which it is detached; the matrix is then re-used again and again, for as many cycles as possible.
  • the matrix is expensive so that it is important to avoid its being damaged during the stripping of the electrodeposited starting sheet. For economic reasons, the stripping process needs to be carried out quickly, so as to speed the recycling of the matrices.
  • the process is slowed down, at best, but may result in large numbers of starting sheets being torn or deformed-and, at worst, the valuable matrix may itself be damaged and rendered unserviceable in the stripping process.
  • a typical matrix plate may be 3mm (1/8") thick, measuring (in its immersed portion) some 1m x 1m (ca.40"x40") so that each side produces a starting sheet of some l M 2 (ca. 11ft 2 ) in area. It will be seen, therefore, that the stripping process is rendered more difficult when the electrodeposit extends over the vertical edges of the matrix plate, so that a continuous layer surrounds the matrix in the horizontal plane; the bottom edge creates no such problems by itself, if the vertical edges are kept bare, the deposit joining back and front layers across the horizontal bottom edge is simply trimmed off to produce the two separate starting sheets; it is usual practice to provide a 'V'-notched groove along the 3mm wide downward facing base of the matrix plate, and to operate with anodes which are significantly shorter in length than the (matrix) cathodes.
  • the electrodeposit reaching the apex of the inverted 'V'-notch is, therefore, extremely thin and readily fractures in a straight line along the apex of the groove when the deposited starting sheets on front and back of the matrix plate are stripped therefrom and folded away from the plate, using the apex-line of the groove as the folding axis. Protection of the grooved base of the matrix plate is required only in special cases (e.g. when there would be adhesion of the deposit within the groove in processes using other than inherently superficially "passive" matrix plates-i.e., other than, e.g. titanium).
  • edge protectors have been proposed to prevent metal deposition at the vertical edges of the matrix plate; but none of these devices has remained effective for more than but a relatively few cycles, and partial break-down of such a protector can create additional hazards of damage to electrodeposit and/or matrix during the stripping process. Moreover, waste material from "lace" edges of the deposit requires re-melting which is wasteful of energy and inconvenient. Conventional "stop-off" coatings are porous (especially at the relatively sharp edge of the titanium plate, where such dipped or painted coatings are thinnest), and if thickly applied, their adhesion is inadequate.
  • U.S. Patent 3798151 discloses a starter blank for producing a starter sheet for use in an electrolytic metal-refining process having a flexible, resilient, U-shaped frame place upon and around its peripheral edges.
  • a wedge is associated with the frame member.
  • the wedge is removed from the frame member and the notched portions of the frame member which house the wedge member are squeezed together simulating a lever-and- fulcrumm action. Such action consequently spreads the U-shaped portion of the frame member, hereby facilitating easy insertion of the starter blank within the frame.
  • the wedges are subsequently inserted within the notched housing portions, thereby simulating a shrink-fitting operation.
  • the bottom portion of the frame is removed, and in lieu thereof, the bottom edge portion of the plate is provided with an inwardly extending V-shaped groove or notch, such configuration aiding the stripping process for the cathode similar to that performed by the removed frame portion relative to the starter blank.
  • an edge protector for electrodes comprising first and second elongate elements both elements being of a rigid material which is firstly electrically insulating and secondly is chemically and thermally stable in the intended process environment of the electrode; the first element having a generally 'H'-shaped cross-section so as to define open slots on opposite sides thereof, one slot profiled generally as a circular segment greater than a semi-circle and defined between a pair of outer jaws and the other slot defined between a pair of inner jaws, with an edge of an electrode being insertable into and locatable withing the inner jaws; and the second element being constituted by a member of circular cross-section so dimensioned and shaped for interference snap fitting engagement with the outer jaws, whereby the outer jaws are forced further apart with the result that the outer jaws endeavour to close the inner jaws which are levered towards one another, thereby to exert a uniform pressure upon the edge of the electrode when located within the inner jaws, to form a seal to provent electrolyte from wetting
  • the edge protector of the present invention unlike the aforementioned prior art proposals operates without recourse to the "springiness" of its material of construction, nor to the use of adhesives or painted-on layers- other than for the purpose of compensating for surface irregularities as in the manner of a gasket-and its efficiency is unimpaired by the effects of thermal expansion; a number of materials which need not be identical for both elements may be utilised for its construction, and the type selected must, of course, remain unaffected chemically and thermally, by the process environment.
  • the principle of operation is simple leverage which not only produces but sustains the necessary forces to maintain efficiency and resistance to dislocation, thus overcoming the shortcomings of existing devices as described in the foregoing. It will be realised that the said "H" configuration is in effect two “levers” (viz., the verticals of the "H”), with the fulcrum-plane represented by the horizontal cross-bar of the "H".
  • the two elongate elements of the edge protector may be of substantially equal length as appropriate for the size of the electrode concerned, and made of rigid insulating material, e.g., polypropylene.
  • the second element may comprise a multiplicity of elongate pieces, the sum total of their combined lengths being substantially equal to the length of the first element of the edge protector.
  • the inner jaws may be so proportioned as to accept the edge of the electrode, inserted therein to a depth of (say) 8-1 Omm, the gap-width being just adequate to accommodate the thickness of the electrode, a so-called friction fit.
  • a rubber mallet may be used to force the second element(s) into the outer jaws.
  • the second element may be of a material having a greater coefficient of thermal expansion than the material of the first element whereby the leverage action on the inner jaws is enhanced, if as is often the case, the electrode matrix is, in use, employed at elevated temperatures.
  • the invention also includes an electrode, of either polarity, e.g., a cathode matrix plate provided with edge protectors as defined above.
  • the edge may, with advantage, be gasketed, e.g., by a suitable adhesive tape, such as polyester tape with thermosetting adhesive, applied to the portion of the electrode at and adjacent to the edge which is to be subsequently inserted into the inner jaws.
  • a suitable adhesive tape such as polyester tape with thermosetting adhesive
  • this edge protector-by itself, or serving as a structural support for attachment of supplementary devices- may be utilised to facilitate precise location of an electrode in the form of a cathode within the cell and/or relative to the anode, both in precision plating processes and for the purpose of preventing accidental short-circuits.
  • the edge protector may also be utilised with (insoluble) anode-plates, providing a convenient support for the-attachment of e.g., anode-shields, bipolar or auxiliary electrodes etc.
  • the edge protector is equally suitable for attachment to the plate's horizontal bottom edge when this is required.
  • the two elongate elements of the edge protector may have such longitudinal dimensions as to protrude beyond the or the immersed length breadth of the electrode to which edge protectors are fitted.
  • a piece of compressible and elastic or springy material such as nitrile "rubber” or neoprene ca. 3.5mm thick and some 9mm square may be entrapped within the protruding inner jaws so as to be in close contact with the 3mm (1/8") wide bare or taped bottom edge of the electrode within the inner jaws to prevent metal deposition on that portion (if bare) or to maintain close adhesion thereto of tape, if tape is employed as aforesaid.
  • the said protrusions may serve for the additional purposes of locating an electrode plate in a cell and/or maintaining inter electrode distance therein and/or act as structural supports serving the said and/or other purposes, and the said protrusions also protect the bottom edge of the electrode plate when this has to be stood upright on the floor outside the cell during repairs or maintenance to equipment such as conveyors etc.
  • the protruding ends of these vertical edge protectors of an electrode plate may also be interconnected by means of a member passing below the horizontal base of the plate.
  • the said connecting member may be so designed and constructed as to serve any of the additional purposes as already referred to, and/or to protect the plate's horizontal bottom edge or (merely) its downward-facing base.
  • the said member may be attached to the vertical protrusions by means of permanent fixture, or it may be hinged at one end and detachably fastened at the other end, or it may be attached in such a manner as to be readily detachable from the vertical protrusions when required.
  • Fixing methods-depending upon the member's shape in profile, etc. include, e.g. mitred joints which may be welded, or gussetted and pinned or bolted, or clamping the ends of the said member within the inner jaws of the protrusions of the vertical edge protectors.
  • an electrode (1) in the form of a cathode matrix plate is illustrated immersed in electrolyte the surface of which is indicated at 2, the plate being generally rectangular and provided, at an upper edge 3 above the electrode surface 2 with a plurality of electrical conductors 4 leading to an electrode bar (not shown) of the cell.
  • the plate also has a bottom edge 5 illustrated as horizontal and opposed edges 6, which are illustrated as vertical.
  • each vertical edge 6 is provided with an edge protector 7 which extends from above the electrolyte surface 2, to below the bottom edge 5.
  • each edge protector 7 can be seen to comprise a first elongate element 8 and a second elongate element 9, both of electrically insulating material, e.g., polypropylene.
  • the first element 8 is "H"- shaped to provide a pair of inner jaws 10 defining a generally parallel sided slot 11 and a pair of outer jaws 12 defining a generally semi-circular slot 13.
  • the edges 6 of the matrix plate are provided with a gasket 14 of polyester tape having a thermosetting adhesive to counter any surface irregularities in the edge 6, the slot 11 being of such a width that the edge 6 and its gasket 14 may be pressed as an interference fit into the slot 11 and be retained there by friction, and this situation has been attained in Figure 5.
  • the second element 9 is of circular section and as indicated in Figure 5, is positioned over the slot 13 and tapped into its fully engaged position shown in Figure 2 by a rubber mallet 15 or similar tool.
  • the effect of inserting the second element 9 is to force the outer jaws 12 further apart with the result that the inner jaws 10 are levered towards one another thereby exerting greater pressure upon the gasket 14, so that in service, an effective seal is formed by the inner jaws 10, to prevent electrolyte from wetting the edges 6.
  • the first element 8 is one piece, the second element can consist of a plurality of individual pieces.
  • Figure 4 details the protrusion of an edge protector 7 below the bottom edge 5, the protrusions serving, e.g. as legs and/or for location purposes of the matrix plate within a cell and/orto protect the bottom edge when the matrix plate is stood upright after removal from a cell.
  • the protrusions are provided with a piece of nitrile rubber 16 secured between the inner jaws 10, to maintain adhesion of the tape 14 to the base of the matrix plate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Fuses (AREA)
  • Push-Button Switches (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Claims (15)

1. Zweiteilige Elektrodenkantenschutzvorrichtung, umfassend: Klemmschiene (8) und Spreizstange (9) je gefertigt aus verformungsfest-steifem Isolierhartstoff welcher außberdem in den jeweils für die Elektrode (1) zutreffenden, verfahrens-bedingten chemischen und thermischen Verhältnissen durchwegs beständig ist; die Klemmschiene (8) ist im Profil wesentlich 'H'- förmig gestaltet, mit zwei zueinander parallel gegenüberliegenden, entlangverlaufenden und nach außen hin offenen Nuten (11, 13): die eine Nut (13) mit der Hohlprofilform eines Kreisabschnitts-jedoch größer als ein Halbkreis-verläuft binnen zwei Außenbacken (12), die andere Nut (11) verläuft zwischen zwei Innenbacken (10) und ist derartig vorgesehen, daß eine dort einfügbare Elektrodenkante (6) binnen der beiden Innenbacken (10) fixierbar ist; das Rundprofil der Spreizstange (9) ist in seiner Form und Durchmessergröße gekennzeichnet dadurch, daß die Spreizstange (9) in die binnen der beiden Außenbacken (12) entlangverlaufenden Nut (13) einschnappbar ist und dort als Preßpassung einrastet, wodurch die beiden Außenbacken (12) auseinandergespreizt werden und infolgedessen eine Hebelung auf die beiden Innenbacken (10) bewirken und diese zu schließen suchen, so daß die derartig enger-aneinandergehebelten Innenbacken (10) auf eine dazwischenfixierte Elektrodenkante (6)-einen gleichmäßigen Druck ausüben und diese fest eingeklemmt und wirksam abgedichtet wird und im Gebrauch unbenetzt vom Elektrolyten (2) verbleibt.
2. Zweiteilige Elektrodenkantenschutzvorrichtung nach Anspruch 1, bei welcher beide Bestandteile (8, 9) im wesentlichen gleichlang, und je aus einem einzelnen stück verformungsfest-steifen Isolierhartstoff gefertigt sind.
3. Zweiteilige Elektrodenkantenschutzvorrichtung nach Anspruch 1, bei welcher die Spreizstange (9) mehrere Glieder umfaßt, deren Gesamtlänge in wesentlichen mit der Länge der Klemmschiene (8) übereinstimmt.
4. Zweiteilge Elektrodenkantenschutzvorrichtung nach den Ansprüchen 2 oder 3, bei welcher der Isolierhartstoff aus Polypropylen besteht.
5. Zweiteilige Elektrodenkantenschutzvorrichtung nach den Ansprüchen 1, 2, 3, und/oder 4, bei welcher die Innenbacken (10) derartig proportioniert sind, daß eine Elektrodenkante (6) zwischen diesen nur streng bzw. reibungsschlüßig einpaßbar ist.
6. Zweiteilige Elektrodenkantenschutzvorrichtung nach den Ansprüchen 1, 2, 3, 4 and/oder 5, bei welcher der für die Spreizstange (9) vorgesehene Werkstoff eine höhere Wärmedehnzahl aufweist als der für die Klemmschiene (8) vorgesehene, was bei Temperaturanstieg eine entsprechende Steigerung der auf die Innenbacken (10) ausgeübten Hebelwirkung zur Folge hat.
7. Elektrode, ausgestattet-mit zu mindest einer Kantenschutzvorrichtung nach den Ansprüchen 1, 2, 3, 4, 5 und/oder 6.
8. Elektrode nach Anspruch 7, bei welcher die mit Kantenschutz (7) zu versehenden Kanten (6) vorerst mit einem Dichtungsmittel beschichtet werden.
9. Elektrode nach Anspruch 8, bei welcher die Dichtungsmittelbeschichtung mittels Klebeband vorgenommen wird, welches auf die Elektrodenkante (6) sowohl als auch auf die an die Kante (6) angrenzenden Oberflächenstreifen der Elektrode (1) aufgetragen wird, bevor die Kante (6) in die binnen der beiden Innenbacken (10) verlaufende Nut (11) eingeschoben wird.
10. Elektrode nach Anspruch 9, bei welcher das Klebeband aus einseitig mit aushärtendem Klebstoff beschichtetem Polyesterfilm besteht.
11. Elektrode nach den Ansprüchen 7, 8, 9 und/oder 10, bei welcher die-allenfalls bei ihrem Einsatz-senkrecht-verlaufenden Kanten (6) und zusätzlich eine waagrechte Kante mit Kantenschutzvorrichtungen (7) ausgestattet sind.
12. Elektrode nach den Ansprüchen 7, 8, 9, 10 und/oder 11, dadurch gekennzeichnet, daß die Längenabmessung bei mindestens einer Kantenschutzvorrichtung (7) derartig vorgesehen ist, daß diese (7) über die Länge oder Breite der Elektrode (1) hinausragt.
13. Elektrode nach Anspruch 12, bei welcher ein Stück elastisches und zusammendrückbares Isoliermaterial (16) in dem binnen der hinausragenden Innenbacken (10) entstandenen Hohlraum von diesen dicht an den lotrecht zur Klemmschiene (8) im Bereich der Innenbacken (10) befindlichen Oberflächenteil des Endprofils der Elektrode (1) eingeklemmt ist.
14. Elektrode nach den Ansprüchen 12 oder 13, bei welcher der hinausragende Teil einer Kantenschutzvorrichtung (7) als Stütze, Träger und/oder Ortungfbehelf dient für jegliche Art von daran befestigten und/oder nichtbefestigten Geräten und/oder Vorrichtungen welche als Zusatzeinrichtung und/oder für jegliche sonstige Zwecke in Verbindung mit dem elektrolytischen Verfahren bestimmt sind, in welchem die Elektrode (1) eingesetzt werden soll.
15. Kathodisches Mutterblech, ausgestattet mit mindestens einer Kantenschutzvorrichtung (7) nach jeglichem, einem oder mehreren der Ansprüche bis einschließlich 14.
EP81201392A 1981-12-23 1981-12-23 Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode Expired EP0082221B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT81201392T ATE18580T1 (de) 1981-12-23 1981-12-23 Elektrodenkantenschutz, mit derartigem elektrodenkantenschutz versehene elektrode.
EP81201392A EP0082221B1 (de) 1981-12-23 1981-12-23 Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode
DE8181201392T DE3174104D1 (en) 1981-12-23 1981-12-23 Electrode edge protector, electrode provided with such protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81201392A EP0082221B1 (de) 1981-12-23 1981-12-23 Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode

Publications (2)

Publication Number Publication Date
EP0082221A1 EP0082221A1 (de) 1983-06-29
EP0082221B1 true EP0082221B1 (de) 1986-03-12

Family

ID=8188175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81201392A Expired EP0082221B1 (de) 1981-12-23 1981-12-23 Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode

Country Status (3)

Country Link
EP (1) EP0082221B1 (de)
AT (1) ATE18580T1 (de)
DE (1) DE3174104D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395722B (de) * 1990-04-23 1993-02-25 Austria Metall Kathodenbleche aus aluminium fuer die elektrolytische gewinnung von zink
DE4325941A1 (de) * 1993-08-03 1995-02-09 Heraeus Elektrochemie Verfahren zur Herstellung einer Elektrode sowie Elektrode und deren Verwendung
CN106435649B (zh) * 2016-11-07 2018-10-12 杨丹虹 电解精炼永久阴极板竖边用暗扣式装配并可修复的包边条
SE542768C2 (sv) 2018-06-29 2020-07-07 Teamx Ab Anordning vid katodplåt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE746708A (fr) * 1970-02-27 1970-07-31 Jenatzy Caoutchouc Ind S A Profile de protection des bords des plaques d'electrolyse,
US3830710A (en) * 1971-01-08 1974-08-20 Int Nickel Co Masked electrode structure and process for electrolytic deposition of metals
JPS514964Y2 (de) * 1971-10-08 1976-02-12
US4186074A (en) * 1979-02-09 1980-01-29 Copper Refineries Pty. Limited Cathode for use in the electrolytic refining of copper

Also Published As

Publication number Publication date
ATE18580T1 (de) 1986-03-15
EP0082221A1 (de) 1983-06-29
DE3174104D1 (en) 1986-04-17

Similar Documents

Publication Publication Date Title
US4406769A (en) Electrode edge protector, electrode provided with such protector and electrodeposits and/or products of electrolysis manufactured by employing such electrodes
CA1082131A (en) Electrode for the electrolytic deposition of metals
CA1129807A (en) Organic polymer mandrel for electroforming
AU2007237222B2 (en) Method for stripping electrodeposited metal sheets and flexing device used therein
US5492609A (en) Cathode for electrolytic refining of copper
EP0082221B1 (de) Elektrodenkantenschutz, mit derartigem Elektrodenkantenschutz versehene Elektrode
GB2080829A (en) Electrode edge protector,
US5919343A (en) Cathode blank for copper plating
FI79147C (fi) Katodaggregat foer galvanisk uttfaellning av metaller.
JPS6256590A (ja) 銅の電解精製用陰極及びその製造方法
SU1344252A3 (ru) Катод дл электролитического рафинировани меди
US4357225A (en) Cathode base plate for electrolytic refining
CN1780939B (zh) 用于制造阴极板的方法和装置
US4137130A (en) Automatic stripping of cathode zinc
EP0873434B1 (de) Verfahren zur herstellung einer mutterplatte zur elektrolytischen raffination und extraktion und so hergestellte mutterplatte
AU2007203088B2 (en) An apparatus for stripping electrodeposited metal sheets
KR20010024406A (ko) 전해정련 또는 전해제련용 전극 및 그 전극의 제조방법
US3530047A (en) Stripping of sheet metal electrodeposits from starting sheet blanks
US2536877A (en) Cathode
KR0171642B1 (ko) 비철금속 전해전착용 음극
US4235696A (en) Mandrel for nickel rounds with a monolithic surface
JPH0515795B2 (de)
CN1213714A (zh) 电镀装置
EP1017883B1 (de) Verfahren zum halten einer mutterplatte
KR100581466B1 (ko) 유전재료삽입물을갖는알루미늄음극베이스판

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

17P Request for examination filed

Effective date: 19821118

AK Designated contracting states

Designated state(s): AT BE DE SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE SE

REF Corresponds to:

Ref document number: 18580

Country of ref document: AT

Date of ref document: 19860315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3174104

Country of ref document: DE

Date of ref document: 19860417

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
EAL Se: european patent in force in sweden

Ref document number: 81201392.8

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

Ref country code: DE

Payment date: 20001129

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20001218

Year of fee payment: 20

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: 20

BE20 Be: patent expired

Free format text: 20011223 *BERGER PETER

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

Ref country code: BE

Payment date: 20010315

Year of fee payment: 20

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

Ref country code: AT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20011223

EUG Se: european patent has lapsed

Ref document number: 81201392.8