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Extract from the Register of European Patents

EP About this file: EP0330106

EP0330106 - Modified cellulose for biocompatible dialysis membranes II, and method for its preparation [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  27.03.1998
Database last updated on 25.09.2024
Most recent event   Tooltip05.10.2005Change: Appeal number 
Applicant(s)For all designated states
Akzo Nobel N.V.
Velperweg 76
6824 BM Arnhem / NL
[N/P]
Former [1994/19]For all designated states
Akzo Nobel N.V.
Velperweg 76
NL-6824 BM Arnhem / NL
Former [1989/35]For all designated states
Akzo N.V.
Postbus 9300 Velperweg 76
NL-6800 SB Arnhem / NL
Inventor(s)01 / Diamantoglou, Michael, Dr.
Kolpingstrasse 4
D-8765 Erlenbach/Main / DE
[1989/35]
Representative(s)Fett, Günter
CPW GmbH Kasinostrasse 19 - 21
42103 Wuppertal / DE
[N/P]
Former [1989/35]Fett, Günter
Akzo Patente GmbH, Postfach 10 01 49
D-42097 Wuppertal / DE
Application number, filing date89102853.218.02.1989
[1989/35]
Priority number, dateDE1988380599225.02.1988         Original published format: DE 3805992
[1989/35]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0330106
Date:30.08.1989
Language:DE
[1989/35]
Search report(s)(Supplementary) European search report - dispatched on:EP21.06.1989
ClassificationIPC:C08B3/16, C08B13/00, C08B15/06, C08B37/08, // B01D13/04, A61M1/16
[1989/35]
CPC:
C08B3/16 (EP,US); B01D71/08 (EP,US); B01D71/12 (EP,US);
B01D71/18 (EP,US); C08B13/00 (EP,US); C08B15/06 (EP,US);
C08B37/003 (EP,US) (-)
Designated contracting statesAT,   BE,   CH,   DE,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL,   SE [1989/35]
TitleGerman:Modifizierte Cellulose für biocompatible Dialysemembranen II und Verfahren zu deren Herstellung[1989/35]
English:Modified cellulose for biocompatible dialysis membranes II, and method for its preparation[1989/35]
French:Cellulose modifiée, son utilisation comme membranes biocompatibles II et procédé pour sa préparation[1989/35]
Examination procedure22.02.1990Examination requested  [1990/16]
14.01.1992Despatch of a communication from the examining division (Time limit: M04)
16.05.1992Reply to a communication from the examining division
22.02.1994Despatch of a communication from the examining division (Time limit: M04)
21.06.1994Reply to a communication from the examining division
08.09.1994Despatch of a communication from the examining division (Time limit: M04)
12.01.1995Reply to a communication from the examining division
06.02.1995Despatch of communication that the application is refused, reason: substantive examination [1998/20]
20.01.1998Application refused, date of legal effect [1998/20]
Appeal following examination01.04.1995Appeal received No.  T0483/95
02.06.1995Statement of grounds filed
20.01.1998Result of appeal procedure: appeal of the applicant was rejected
06.11.1992Appeal received No.  T0219/93
29.01.1993Statement of grounds filed
16.09.1993Result of appeal procedure: appeal of the applicant was rejected
19.01.1998Date of oral proceedings
23.01.1998Minutes of oral proceedings despatched
Fees paidRenewal fee
25.01.1991Renewal fee patent year 03
28.12.1991Renewal fee patent year 04
19.12.1992Renewal fee patent year 05
28.12.1993Renewal fee patent year 06
27.12.1994Renewal fee patent year 07
27.12.1995Renewal fee patent year 08
28.12.1996Renewal fee patent year 09
20.12.1997Renewal fee patent year 10
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Documents cited:Search[X]US1991107  (MALM CARL J, et al);
 [X]US2430911  (HALE CHARCH WILLIAM, et al);
 [X]US2453275  (SEYMOUR GEORGE W, et al);
 [X]US3314940  (THERESE LEMMERLING JOSE, et al);
 [X]US3489743  (CRANE CARLTON L);
 [X]US3816150  (ISHII K, et al);
 [X]EP0028126  (KUREHA CHEMICAL IND CO LTD [JP]);
 [X]US4487926  (ISHIKAWA NOBUO [JP], et al);
 [X]US4520192  (NAMIKOSHI HAJIME [JP]);
 [X]EP0146277  (STALEY MFG CO A E [US]);
 [A]EP0172437  (AKZO GMBH [DE]);
 [XPD]DE3723897  (AKZO GMBH [DE])
 [X]  - ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, Band 37, Nr. 12, Juni 1967, Seite 750, Nr. 8820, Appleton, Wisconsin, US; M.Y. PORMALE et al.: "Acetylation of cellulose ethers containing higher alkyls and the properties of the mixed derivatives", & ZH. PRIKL. KHIM. 39, no. 11, 1966, Seiten 2567-2570
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.