SE465966B - Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden - Google Patents

Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden

Info

Publication number: SE465966B
Authority: SE; Sweden
Prior art keywords: electrode; circulation channel; channels; upwardly directed; holes
Prior art date: 1989-07-14

Application number

SE8902536A

Other languages

English (en)

Swedish (sv)

Other versions

SE8902536D0 (sv

SE8902536L (sv

Inventor

A Ullman

Original Assignee

Permascand Ab

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.)

1989-07-14

Filing date

1989-07-14

Publication date

1991-11-25

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20376550&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE465966(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1989-07-14 Publication of SE8902536D0 publication Critical patent/SE8902536D0/xx

1989-07-14 Priority to SE8902536A priority Critical patent/SE465966B/sv

1989-07-14 Application filed by Permascand Ab filed Critical Permascand Ab

1990-06-29 Priority to IS3598A priority patent/IS1520B/is

1990-06-29 Priority to DE69015518T priority patent/DE69015518T2/de

1990-06-29 Priority to AT90850257T priority patent/ATE116383T1/de

1990-06-29 Priority to EP90850257A priority patent/EP0415896B1/fr

1990-06-29 Priority to ES90850257T priority patent/ES2065518T3/es

1990-07-09 Priority to CA002020691A priority patent/CA2020691C/fr

1990-07-11 Priority to FI903502A priority patent/FI90999C/fi

1990-07-11 Priority to AU58915/90A priority patent/AU617060C/en

1990-07-12 Priority to ZA905465A priority patent/ZA905465B/xx

1990-07-12 Priority to US07/551,315 priority patent/US5114547A/en

1990-07-12 Priority to JP2182879A priority patent/JP2739607B2/ja

1990-07-13 Priority to BR909003374A priority patent/BR9003374A/pt

1990-07-13 Priority to NO903127A priority patent/NO177273C/no

1990-07-13 Priority to SU904830492A priority patent/RU2052543C1/ru

1990-07-13 Priority to CN90104620A priority patent/CN1041850C/zh

1991-01-15 Publication of SE8902536L publication Critical patent/SE8902536L/

1991-11-25 Publication of SE465966B publication Critical patent/SE465966B/sv

1995-03-23 Priority to GR940404186T priority patent/GR3015536T3/el

Links

238000000034 method Methods 0.000 title claims description 20
238000004519 manufacturing process Methods 0.000 title claims description 6
229910052751 metal Inorganic materials 0.000 claims abstract description 20
239000002184 metal Substances 0.000 claims abstract description 20
239000012528 membrane Substances 0.000 claims abstract description 17
238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
238000004049 embossing Methods 0.000 claims abstract description 9
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 7
239000000460 chlorine Substances 0.000 claims abstract description 7
229910052801 chlorine Inorganic materials 0.000 claims abstract description 7
150000002739 metals Chemical class 0.000 claims abstract description 5
238000005096 rolling process Methods 0.000 claims abstract description 3
239000013535 sea water Substances 0.000 claims abstract description 3
238000011084 recovery Methods 0.000 claims abstract 3
238000000605 extraction Methods 0.000 claims description 4
238000004080 punching Methods 0.000 claims description 3
238000005520 cutting process Methods 0.000 claims description 2
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 9
230000000149 penetrating effect Effects 0.000 abstract 1
239000007789 gas Substances 0.000 description 11
239000003792 electrolyte Substances 0.000 description 10
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
230000001976 improved effect Effects 0.000 description 6
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
239000010936 titanium Substances 0.000 description 5
XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
241000446313 Lamella Species 0.000 description 4
239000011780 sodium chloride Substances 0.000 description 4
229910052719 titanium Inorganic materials 0.000 description 4
229910045601 alloy Inorganic materials 0.000 description 3
239000000956 alloy Substances 0.000 description 3
230000000694 effects Effects 0.000 description 3
238000003411 electrode reaction Methods 0.000 description 3
KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
229910001069 Ti alloy Inorganic materials 0.000 description 2
239000003513 alkali Substances 0.000 description 2
239000003054 catalyst Substances 0.000 description 2
239000011248 coating agent Substances 0.000 description 2
238000000576 coating method Methods 0.000 description 2
210000002816 gill Anatomy 0.000 description 2
230000005012 migration Effects 0.000 description 2
238000013508 migration Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
239000011149 active material Substances 0.000 description 1
229910001514 alkali metal chloride Inorganic materials 0.000 description 1
150000001450 anions Chemical class 0.000 description 1
239000010405 anode material Substances 0.000 description 1
230000009286 beneficial effect Effects 0.000 description 1
238000005422 blasting Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
230000004907 flux Effects 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
229910052741 iridium Inorganic materials 0.000 description 1
GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
239000000463 material Substances 0.000 description 1
QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
229910052753 mercury Inorganic materials 0.000 description 1
229910001092 metal group alloy Inorganic materials 0.000 description 1
229910052758 niobium Inorganic materials 0.000 description 1
239000010955 niobium Substances 0.000 description 1
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
238000005457 optimization Methods 0.000 description 1
238000000059 patterning Methods 0.000 description 1
238000005554 pickling Methods 0.000 description 1
-1 platinum group metals Chemical class 0.000 description 1
238000007363 ring formation reaction Methods 0.000 description 1
230000000630 rising effect Effects 0.000 description 1
229910052707 ruthenium Inorganic materials 0.000 description 1
150000003839 salts Chemical class 0.000 description 1
238000000926 separation method Methods 0.000 description 1
238000007086 side reaction Methods 0.000 description 1
229910052715 tantalum Inorganic materials 0.000 description 1
GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
229910052721 tungsten Inorganic materials 0.000 description 1
239000010937 tungsten Substances 0.000 description 1
229910052726 zirconium Inorganic materials 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
- 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

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 Non-Metals, Compounds, Apparatuses Therefor (AREA)
Electrodes For Compound Or Non-Metal Manufacture (AREA)
Electrolytic Production Of Metals (AREA)
Superconductors And Manufacturing Methods Therefor (AREA)
Surgical Instruments (AREA)
Secondary Cells (AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Connection Of Batteries Or Terminals (AREA)
Vessels And Coating Films For Discharge Lamps (AREA)
Junction Field-Effect Transistors (AREA)
Electrodes Of Semiconductors (AREA)
Physical Or Chemical Processes And Apparatus (AREA)
Shaping Metal By Deep-Drawing, Or The Like (AREA)

SE8902536A 1989-07-14 1989-07-14 Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden SE465966B (sv)

Priority Applications (17)

Application Number	Priority Date	Filing Date	Title
SE8902536A SE465966B (sv)	1989-07-14	1989-07-14	Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden
IS3598A IS1520B (is)	1989-07-14	1990-06-29	Rafskaut
DE69015518T DE69015518T2 (de)	1989-07-14	1990-06-29	Elektrode für Elektrolyse.
AT90850257T ATE116383T1 (de)	1989-07-14	1990-06-29	Elektrode für elektrolyse.
EP90850257A EP0415896B1 (fr)	1989-07-14	1990-06-29	Electrode pour électrolyse
ES90850257T ES2065518T3 (es)	1989-07-14	1990-06-29	Electrodo para electrolisis.
CA002020691A CA2020691C (fr)	1989-07-14	1990-07-09	Electrode avec canal de circulation vertical central et canaux orientes vers le haut en relief
FI903502A FI90999C (fi)	1989-07-14	1990-07-11	Elektrodi
AU58915/90A AU617060C (en)	1989-07-14	1990-07-11	Electrode for efficient gas removal and electrolyte circulation
ZA905465A ZA905465B (en)	1989-07-14	1990-07-12	Electrode
JP2182879A JP2739607B2 (ja)	1989-07-14	1990-07-12	電極
US07/551,315 US5114547A (en)	1989-07-14	1990-07-12	Electrode
BR909003374A BR9003374A (pt)	1989-07-14	1990-07-13	Eletrodo para eletrolise e processo para sua producao
NO903127A NO177273C (no)	1989-07-14	1990-07-13	Elektrode for elektrolyse, samt fremgangsmåte ved fremstilling av elektroden og anvendelse av denne
SU904830492A RU2052543C1 (ru)	1989-07-14	1990-07-13	Электрод и способ его получения
CN90104620A CN1041850C (zh)	1989-07-14	1990-07-13	电极、其制造方法及电极的用途
GR940404186T GR3015536T3 (en)	1989-07-14	1995-03-23	Electrode for electrolysis.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE8902536A SE465966B (sv)	1989-07-14	1989-07-14	Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden

Publications (3)

Publication Number	Publication Date
SE8902536D0 SE8902536D0 (sv)	1989-07-14
SE8902536L SE8902536L (sv)	1991-01-15
SE465966B true SE465966B (sv)	1991-11-25

Family

ID=20376550

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8902536A SE465966B (sv)	1989-07-14	1989-07-14	Elektrod foer elektrolys, foerfarande foer dess framstaellning samt anvaendningen av elektroden

Country Status (16)

Country	Link
US (1)	US5114547A (fr)
EP (1)	EP0415896B1 (fr)
JP (1)	JP2739607B2 (fr)
CN (1)	CN1041850C (fr)
AT (1)	ATE116383T1 (fr)
BR (1)	BR9003374A (fr)
CA (1)	CA2020691C (fr)
DE (1)	DE69015518T2 (fr)
ES (1)	ES2065518T3 (fr)
FI (1)	FI90999C (fr)
GR (1)	GR3015536T3 (fr)
IS (1)	IS1520B (fr)
NO (1)	NO177273C (fr)
RU (1)	RU2052543C1 (fr)
SE (1)	SE465966B (fr)
ZA (1)	ZA905465B (fr)

Families Citing this family (31)

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SE505714C2 (sv) *	1991-09-19	1997-09-29	Permascand Ab	Elektrod med kanalbildande trådar, sätt att tillverka elektroden, elektrolyscell försedd med elektroden samt sätt vid elektrolys
US5200054A (en) *	1992-07-22	1993-04-06	The United States Of America As Represented By The United States Department Of Energy	Ice electrode electrolytic cell
DE4415146C2 (de) *	1994-04-29	1997-03-27	Uhde Gmbh	Elektrode für Elektrolysezellen mit Ionenaustauscher-Membran
CN1037620C (zh) *	1995-03-17	1998-03-04	贵州省新材料研究开发基地	电解生产金属锰用复合合金阳极及其制备方法
IT1279069B1 (it) *	1995-11-22	1997-12-04	Permelec Spa Nora	Migliorato tipo di elettrodo per elettrolizzatori a membrana a scambio ionico
DE19816334A1 (de) *	1998-04-11	1999-10-14	Krupp Uhde Gmbh	Elektrolyseapparat zur Herstellung von Halogengasen
EP0999294A1 (fr) *	1998-10-10	2000-05-10	Cumberland Electrochemical Limited	Electrode métallique bipolaire et électrolyseur la comprenant
US6368472B1 (en) *	1998-11-04	2002-04-09	Mcguire Byron Duvon	Electrolytic chemical generator
ITMI20010643A1 (it) *	2001-03-27	2002-09-27	De Nora Elettrodi Spa	Struttura anodica per celle elettolitiche a catodo di mercurio
CN101271849A (zh) *	2002-05-27	2008-09-24	山一电机株式会社	电极的恢复处理方法
US7159292B2 (en)	2002-05-27	2007-01-09	Yamaichi Electronics Co., Ltd.	Recovery processing method of an electrode
JP3771907B2 (ja) *	2002-05-27	2006-05-10	山一電機株式会社	電極の回復処理方法
KR100603536B1 (ko) *	2003-11-19	2006-07-26	박상길	메쉬형 전극판을 갖는 전기분해장치
DE102005006555A1 (de) *	2005-02-11	2006-08-17	Uhdenora S.P.A.	Elektrode für Elektrolysezellen
GB0509753D0 (en) *	2005-04-27	2005-06-22	Atraverda Ltd	Electrode and manufacturing methods
JP4975271B2 (ja) *	2005-05-18	2012-07-11	株式会社フルヤ金属	電解的水処理電極
RU2336370C2 (ru) *	2006-11-16	2008-10-20	Институт химии твердого тела и механохимии Сибирского отделения Российской академии наук (ИХТТМ СО РАН)	Объемно-пористый электродный материал с контролируемыми геометрическими параметрами структуры
ITMI20070980A1 (it) *	2007-05-15	2008-11-16	Industrie De Nora Spa	Elettrodo per celle elettrolitiche a membrana
DE102007041828A1 (de) *	2007-09-03	2009-03-05	Siemens Ag	Vorrichtung und Verfahren zum Abbau von Schadstoffen in einer Flüssigkeit sowie Verwendung einer solchen Vorrichtung
US8591747B2 (en) *	2008-05-27	2013-11-26	Dober Chemical Corp.	Devices and methods for controlled release of additive compositions
GB2500383A (en) *	2012-03-19	2013-09-25	Intelligent Energy Ltd	Fuel cell fluid distribution
EP2956574B1 (fr) *	2013-02-14	2018-08-29	Alliance Magnésium	Agencement d'anode à diffusion de gaz hydrogène pour la production d'hcl
US9909223B1 (en)	2014-08-04	2018-03-06	Byron Duvon McGuire	Expanded metal with unified margins and applications thereof
WO2016043134A1 (fr) *	2014-09-19	2016-03-24	株式会社東芝	Ensemble électrode, dispositif d'électrolyse, et électrodes à utiliser dans un dispositif d'électrolyse
US10844494B2 (en)	2015-09-18	2020-11-24	The Trustees Of Columbia University In The City Of New York	Membraneless electrochemical flow-through reactor
JP6797779B2 (ja) *	2017-10-31	2020-12-09	株式会社東芝	電気化学セル及び電気化学装置
TW202321516A (zh) *	2018-05-25	2023-06-01	日商松下知識產權經營股份有限公司	電解水生成系統
US11339480B2 (en) *	2019-03-06	2022-05-24	Kabushiki Kaisha Toshiba	Electrolytic cell and hydrogen production apparatus
CN114314769B (zh) *	2022-01-20	2023-04-18	山东欣远新材料科技有限公司	一种基于bdd电极的电解模组及水处理系统
DK181555B1 (en) *	2022-10-11	2024-05-14	Stiesdal Hydrogen As	Alkaline electrolyser with cooled bipolar electrode
DK181744B1 (en) *	2023-01-13	2024-11-20	Stiesdal Hydrogen As	Electrolyser and method for its operation

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US3174923A (en) *	1961-06-14	1965-03-23	Dow Chemical Co	Mercury cathode electrolytic cell
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DE2059868B2 (de) *	1969-12-06	1974-07-25	Nippon Soda Co., Ltd., Tokio	Vertikal anzuordnende Elektrodenplatte für eine gasbildende Elektrolyse
US3901731A (en) *	1971-02-15	1975-08-26	Alsthom Cgee	Thin sheet apparatus for supplying and draining liquid
DE2213603A1 (de) *	1972-03-21	1973-10-04	Georg Dr Messner	Verfahren und vorrichtung zur elektrolytischen behandlung von chlorwasserstoff enthaltenden loesungen an graphitelktroden unter getrennthaltung der gebildeten gase chlor und wasserstoff
US4059215A (en) *	1975-09-05	1977-11-22	Lamons Metal Gasket Company	Circular double-jacketed gasket with single joint
IT1165047B (it) *	1979-05-03	1987-04-22	Oronzio De Nora Impianti	Procedimento per migliorare il trasporto di materia ad un elettrodo e mezzi idrodinamici relativi
DE3219704A1 (de) *	1982-05-26	1983-12-01	Uhde Gmbh, 4600 Dortmund	Membran-elektrolysezelle
GB2132634B (en) *	1982-12-30	1986-03-19	Alcan Int Ltd	Electrolytic cell for metal production
US4511440A (en) *	1983-12-22	1985-04-16	Allied Corporation	Process for the electrolytic production of fluorine and novel cell therefor
GB8407871D0 (en) *	1984-03-27	1984-05-02	Ici Plc	Electrode and electrolytic cell
DE3501261A1 (de) *	1985-01-16	1986-07-17	Uhde Gmbh, 4600 Dortmund	Elektrolyseapparat
JPS61186489A (ja) *	1985-02-13	1986-08-20	Hiroshi Ishizuka	アルカリ金属または土金属の溶融塩化物電解装置
DE3519573A1 (de) *	1985-05-31	1986-12-04	Conradty GmbH & Co Metallelektroden KG, 8505 Röthenbach	Elektrode fuer die membran-elektrolyse
ES8609513A1 (es) *	1985-06-21	1986-09-01	Hermana Tezanos Enrique	Nuevo diseno de catodo para beneficio electroquimico de me- tales
GB8530893D0 (en) *	1985-12-16	1986-01-29	Ici Plc	Electrode
US4707239A (en) *	1986-03-11	1987-11-17	The United States Of America As Represented By The Secretary Of The Interior	Electrode assembly for molten metal production from molten electrolytes

1989
- 1989-07-14 SE SE8902536A patent/SE465966B/sv not_active IP Right Cessation
1990
- 1990-06-29 IS IS3598A patent/IS1520B/is unknown
- 1990-06-29 ES ES90850257T patent/ES2065518T3/es not_active Expired - Lifetime
- 1990-06-29 EP EP90850257A patent/EP0415896B1/fr not_active Revoked
- 1990-06-29 AT AT90850257T patent/ATE116383T1/de active
- 1990-06-29 DE DE69015518T patent/DE69015518T2/de not_active Revoked
- 1990-07-09 CA CA002020691A patent/CA2020691C/fr not_active Expired - Fee Related
- 1990-07-11 FI FI903502A patent/FI90999C/fi not_active IP Right Cessation
- 1990-07-12 JP JP2182879A patent/JP2739607B2/ja not_active Expired - Lifetime
- 1990-07-12 ZA ZA905465A patent/ZA905465B/xx unknown
- 1990-07-12 US US07/551,315 patent/US5114547A/en not_active Expired - Fee Related
- 1990-07-13 CN CN90104620A patent/CN1041850C/zh not_active Expired - Fee Related
- 1990-07-13 BR BR909003374A patent/BR9003374A/pt not_active IP Right Cessation
- 1990-07-13 NO NO903127A patent/NO177273C/no not_active IP Right Cessation
- 1990-07-13 RU SU904830492A patent/RU2052543C1/ru active
1995
- 1995-03-23 GR GR940404186T patent/GR3015536T3/el unknown

Also Published As

Publication number	Publication date
SE8902536D0 (sv)	1989-07-14
NO903127L (no)	1991-01-15
EP0415896B1 (fr)	1994-12-28
JP2739607B2 (ja)	1998-04-15
CA2020691C (fr)	1998-06-30
ATE116383T1 (de)	1995-01-15
CN1048732A (zh)	1991-01-23
SE8902536L (sv)	1991-01-15
NO177273C (no)	1995-08-16
DE69015518D1 (de)	1995-02-09
RU2052543C1 (ru)	1996-01-20
IS3598A7 (is)	1991-01-15
BR9003374A (pt)	1991-08-27
FI90999B (fi)	1994-01-14
ES2065518T3 (es)	1995-02-16
CN1041850C (zh)	1999-01-27
FI903502A0 (fi)	1990-07-11
AU5891590A (en)	1991-01-17
GR3015536T3 (en)	1995-06-30
DE69015518T2 (de)	1995-05-11
EP0415896A1 (fr)	1991-03-06
NO903127D0 (no)	1990-07-13
IS1520B (is)	1992-11-04
CA2020691A1 (fr)	1991-01-15
NO177273B (no)	1995-05-08
AU617060B2 (en)	1991-11-14
ZA905465B (en)	1991-04-24
FI90999C (fi)	1994-04-25
JPH0353091A (ja)	1991-03-07
US5114547A (en)	1992-05-19

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