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Extract from the Register of European Patents

EP About this file: EP0100552

EP0100552 - Hydrophilized membrane of porous hydrophobic material and process of producing same [Right-click to bookmark this link]
StatusPatent maintained as amended
Status updated on  07.09.1991
Database last updated on 11.09.2024
Most recent event   Tooltip07.09.1991Patent maintained (B2 publication)published on 23.10.1991 [1991/43]
Applicant(s)For all designated states
MITSUBISHI RAYON CO., LTD.
3-19, Kyobashi 2-chome, Chuo-ku
Tokyo 104-8350 / JP
For all designated states
SENKO MEDICAL INSTRUMENT Mfg Co., LTD
No: 23-13, Hongo 3-Chome Bunkyo-ku
Tokyo / JP
[N/P]
Former [1984/07]For all designated states
MITSUBISHI RAYON CO., LTD.
3-19, Kyobashi 2-chome Chuo-Ku
Tokyo 104 / JP
For all designated states
SENKO MEDICAL INSTRUMENT Mfg Co., LTD
No: 23-13, Hongo 3-Chome
Bunkyo-ku Tokyo / JP
Inventor(s)01 / Nakanishi, Hikaru
5-404, Asohdai Danchi Shimoasoh Asoh-ku
Kawasaki-shi Kanagawa-ken / JP
[1984/07]
Representative(s)Hansen, Bernd, et al
Hoffmann Eitle Patent- und Rechtsanwälte Postfach 81 04 20
81904 München / DE
[N/P]
Former [1989/17]Hansen, Bernd, Dr.rer.nat., et al
Hoffmann, Eitle & Partner Patentanwälte Postfach 81 04 20
D-81904 München / DE
Former [1984/07]Hansen, Bernd, Dr. Dipl.-Chem.
Hoffmann, Eitle & Partner Patent- und Rechtsanwälte, Postfach 81 04 20
D-81904 München / DE
Application number, filing date83107611.202.08.1983
[1984/07]
Priority number, dateJP1982013485302.08.1982         Original published format: JP 13485382
[1984/07]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0100552
Date:15.02.1984
Language:EN
[1984/07]
Type: A3 Search report 
No.:EP0100552
Date:02.05.1985
Language:EN
[1985/18]
Type: B1 Patent specification 
No.:EP0100552
Date:28.12.1988
Language:EN
[1988/52]
Type: B2 New European patent specification 
No.:EP0100552
Date:23.10.1991
Language:EN
[1991/43]
Search report(s)(Supplementary) European search report - dispatched on:EP28.02.1985
ClassificationIPC:B01D65/00, // A61M1/34, C02F1/44
[1991/43]
CPC:
B01D67/0088 (EP,US); Y10T428/24802 (EP,US); Y10T428/249993 (EP,US)
Former IPC [1988/52]B01D13/04, // A61M1/34, C02F1/44
Former IPC [1984/07]B01D13/04, // A61M1/03, C02F1/44
Designated contracting statesDE,   FR,   GB,   IT,   NL,   SE [1984/07]
TitleGerman:Hydrophilisierte Membran aus hydrophobem porösem Material und Verfahren zu ihrer Herstellung[1984/07]
English:Hydrophilized membrane of porous hydrophobic material and process of producing same[1984/07]
French:Membrane à base d'un matériau poreux hydrophobe rendue hydrophile et son procédé de fabrication[1984/07]
Examination procedure02.09.1985Examination requested  [1985/46]
13.06.1986Despatch of a communication from the examining division (Time limit: M06)
15.12.1986Reply to a communication from the examining division
11.05.1987Despatch of a communication from the examining division (Time limit: M04)
14.08.1987Reply to a communication from the examining division
28.01.1988Despatch of communication of intention to grant (Approval: Yes)
22.06.1988Communication of intention to grant the patent
26.08.1988Fee for grant paid
26.08.1988Fee for publishing/printing paid
Opposition(s)Opponent(s)01  12.08.1989  28.08.1989  ADMISSIBLE
Enka AG
Enka-Haus Kasinostrasse Postfach 10 01 49
D-42001 Wuppertal / DE
 [N/P]
Former [1989/41]
Opponent(s)01  12.08.1989  28.08.1989  ADMISSIBLE
Enka AG
Enka-Haus Kasinostrasse Postfach 10 01 49
D-42001 Wuppertal / DE
03.11.1989Invitation to proprietor to file observations on the notice of opposition
03.05.1990Reply of patent proprietor to notice(s) of opposition
10.05.1990Communication of observations of patent proprietor (Time limit: M04)
05.09.1990Reply of parties involved to observations of patent proprietor
14.02.1991Despatch of interlocutory decision in opposition
25.02.1991Legal effect of interlocutory decision in opposition
28.05.1991Despatch of communication that the patent will be maintained as amended
31.07.1991Fee for printing new specification paid
Fees paidRenewal fee
31.07.1985Renewal fee patent year 03
29.08.1986Renewal fee patent year 04
28.08.1987Renewal fee patent year 05
31.08.1988Renewal fee patent year 06
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Documents cited:Search[X]JP53080378  ;
 [A]JP55136462  ;
 [X]EP0046817  (GAMBRO INC [US]);
 [X]FR2361439  (SUMITOMO ELECTRIC INDUSTRIES [JP]);
 [A]NL7306466  ;
 [A]FR2391836  (MILLIPORE CORP [US]);
 [A]GB2041821  (CELANESE CORP);
 [A]FR2121818  (CELANESE CORP);
 [A]US4280970  (KESTING ROBERT E)
 [X]  - PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 117, 29th September 1978, page 2245C78; & JP - A - 53 080 378 (SUMITOMO DENKI KOGYO K.K.) 15-07-1978, & JP53080378 A 00000000
 [A]  - PATENTS ABSTRACTS OF JAPAN, vol. 5, no. 7(E-41)(679), 17th January 1981; & JP-A-55 136 462 (HITACHI MAXELL K.K.) 24-10-1980, & JP55136462 A 00000000
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.