Extract from the Register of European Patents

EP About this file: EP0791973

EP0791973 - Vinylidene fluoride polymer-based binder solution and electrode-forming composition [Right-click to bookmark this link]
Former [1997/35]Vinylidene fluoride plymer-based binder solution and electrode-forming composition
[2001/18]
StatusPatent revoked
Status updated on  01.12.2006
Database last updated on 11.04.2026
Most recent event   Tooltip02.10.2009Change - representativepublished on 04.11.2009  [2009/45]
Applicant(s)For all designated states
Kureha Corporation
3-3-2, Nihonbashi-Hamacho, Chuo-ku
Tokyo 103-8552 / JP
[2006/01]
Former [2002/05]For all designated states
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
1-9-11, Nihonbashi, Horidome-cho
Chuo-ku, Tokyo 103-8552 / JP
Former [1997/35]For all designated states
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
1-9-11, Nihonbashi, Horidome-cho
Chuo-ku Tokyo 103 / JP
Inventor(s)01 / Kashio, Hidetora, c/o Kureha Kagaku Kogyo K.K.
1-9-11, Nihonbashi Horidome-cho
Chuo-ku, Tokyo 103 / JP
02 / Horie, Katsuo, c/o Kureha Kagaku Kogyo K.K.
1-9-11, Nihonbashi Horidome-cho
Chuo-ku, Tokyo 103 / JP
03 / Nagai, Aisaku, c/o Kureha Kagaku Kogyo K.K.
1-9-11, Nihonbashi Horidome-cho
Chuo-ku, Tokyo 103 / JP
04 / Aita, Tomoyuki, c/o Kureha Kagaku Kogyo K.K.
1-9-11, Nihonbashi Horidome-cho
Chuo-ku, Tokyo 103 / JP
05 / Kitagoh, Hiroshi, c/o Kureha Kagaku Kogyo K.K.
1-9-11, Nihonbashi Horidome-cho
Chuo-ku, Tokyo 103 / JP
[1997/35]
Representative(s)Gillard, Richard Edward
Elkington and Fife LLP
Thavies Inn House
3-4 Holborn Circus
London EC1N 2HA / GB
[N/P]
Former [2009/45]Gillard, Richard Edward
Elkington and Fife LLP Thavies Inn House 3-4 Holborn Circus
London EC1N 2HA / GB
Former [2003/11]Gillard, Richard Edward
Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks
Kent TN13 1XR / GB
Former [1997/35]Kyle, Diana
Elkington and Fife Prospect House 8 Pembroke Road
Sevenoaks, Kent TN13 1XR / GB
Application number, filing date97301050.719.02.1997
[1997/35]
Priority number, dateJP1996006204022.02.1996         Original published format: JP 6204096
JP1996029786823.10.1996         Original published format: JP 29786896
[1997/35]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0791973
Date:27.08.1997
Language:EN
[1997/35]
Type: A3 Search report 
No.:EP0791973
Date:03.06.1998
[1998/23]
Type: B1 Patent specification 
No.:EP0791973
Date:30.01.2002
Language:EN
[2002/05]
Search report(s)(Supplementary) European search report - dispatched on:EP20.04.1998
ClassificationIPC:H01M4/62, C08F214/22
[1997/35]
CPC:
C08F14/22 (EP,US); H01M4/60 (KR); H01G11/38 (EP,US);
H01M4/04 (EP,US); H01M4/0404 (EP,US); H01M4/0409 (EP,US);
H01M4/0416 (EP,US); H01M4/62 (KR); H01M4/621 (EP,US);
H01M4/623 (EP,US); H01G11/32 (EP,US); H01M2300/0025 (EP,US);
Y02E60/10 (EP); Y02E60/13 (EP,US) (-)
C-Set:
C08F14/22, C08F2/16 (EP,US)
Designated contracting statesDE,   FR,   GB,   NL [1997/35]
TitleGerman:Bindemittellösung auf Vinylidenfluorid-Basis und Zusammensetzung zur Herstellung von Elektroden[1997/35]
English:Vinylidene fluoride polymer-based binder solution and electrode-forming composition[2001/18]
French:Solution d'un liant à base d'un polymère de fluoride de vinylidène et composition pour la formation d'une électrode[1997/35]
Former [1997/35]Vinylidene fluoride plymer-based binder solution and electrode-forming composition
Examination procedure10.03.1997Examination requested  [1997/35]
10.02.2000Despatch of a communication from the examining division (Time limit: M06)
17.08.2000Reply to a communication from the examining division
30.03.2001Despatch of communication of intention to grant (Approval: Yes)
06.08.2001Communication of intention to grant the patent
31.10.2001Fee for grant paid
31.10.2001Fee for publishing/printing paid
Opposition(s)Opponent(s)01  29.10.2002  06.12.2002  ADMISSIBLE
Solvay (Société Anonyme)
Rue du Prince Albert, 33
B-1050 Bruxelles / BE
Opponent's representative
Jacques, Philippe, et al, et al
Solvay S.A.
Département de la Propriété Industrielle
Rue de Ransbeek, 310
1120 Bruxelles / BE
 [N/P]
Former [2004/02]
Opponent(s)01  29.10.2002  06.12.2002  ADMISSIBLE
Solvay (Société Anonyme)
Rue du Prince Albert, 33
B-1050 Bruxelles / BE
Opponent's representative
Jacques, Philippe, et al, et al
Solvay S.A. Département de la Propriété Industrielle, Rue de Ransbeek, 310
1120 Bruxelles / BE
Former [2003/01]
Opponent(s)01  29.10.2002  06.12.2002  ADMISSIBLE
Solvay (Société Anonyme)
Rue du Prince Albert, 33
B-1050 Bruxelles / BE
Opponent's representative
Dufrasne, Eugène (BE)
Solvay S.A. Département Propriété Industrielle 310, rue de Ransbeek
B-1120 Bruxelles / BE
11.12.2002Invitation to proprietor to file observations on the notice of opposition
30.05.2003Reply of patent proprietor to notice(s) of opposition
05.03.2004Date of oral proceedings
01.04.2004Despatch of minutes of oral proceedings
01.04.2004Despatch of communication that the patent will be revoked
18.10.2006Legal effect of revocation of patent [2007/01]
Appeal following opposition24.05.2004Appeal received No.  T0749/04
21.07.2004Statement of grounds filed
18.10.2006Result of appeal procedure: appeal of the proprietor was rejected
18.10.2006Date of oral proceedings
17.07.2006Minutes of the oral proceedings despatched
Fees paidRenewal fee
10.02.1999Renewal fee patent year 03
11.02.2000Renewal fee patent year 04
15.02.2001Renewal fee patent year 05
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Documents cited:Search[AD] EP0751157  (KUREHA CHEMICAL IND CO LTD et al.) [AD] 1-11 * claim - *
 [AD] US5415958  (TAKAHASHI YOSUKE et al.) [AD] 1-11 * column A *
 [A] EP0601754  (KUREHA CHEMICAL IND CO LTD et al.) [A] 1-11 * claim - *
 [AP] JPH08190912  
 [AP]   DATABASE WPI Section Ch Week 9639, Derwent World Patents Index; Class A85, AN 96-390698, XP002900015 [AP] 1-11 * abstract *
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