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EP0401668
European procedure
Extract from the Register of European Patents
EP About this file: EP0401668
| EP0401668 - Silated cellulose ether [Right-click to bookmark this link] | |||
| Former [1990/50] | Silated polysaccharides | ||
| [1997/31] | Status | No opposition filed within time limit Status updated on 05.06.1998 Database last updated on 18.01.2025 | Most recent event Tooltip | 12.09.2008 | Change - representative | published on 15.10.2008 [2008/42] | Applicant(s) | For all designated states AQUALON COMPANY 2711 Centerville Road Little Falls Centre One Wilmington Delaware 19850-5417 / US | [N/P] |
| Former [1990/50] | For all designated states AQUALON COMPANY 2711 Centerville Road Little Falls Centre One Wilmington Delaware 19850-5417 / US | Inventor(s) | 01 /
Sau, Arjun C. 521 Langwater Drive Newark, Delaware 19711 / US | [1990/50] | Representative(s) | Lederer, Franz, et al Lederer & Keller Patentanwälte Unsöldstrasse 2 80538 München / DE | [N/P] |
| Former [2008/42] | Lederer, Franz, et al Lederer & Keller Patentanwälte Prinzregentenstrasse 16 80538 München / DE | ||
| Former [1990/50] | Lederer, Franz, Dr., et al Lederer, Keller & Riederer Patentanwälte Prinzregentenstrasse 16 D-80538 München / DE | Application number, filing date | 90110290.5 | 30.05.1990 | [1990/50] | Priority number, date | US19890361854 | 05.06.1989 Original published format: US 361854 | [1990/50] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0401668 | Date: | 12.12.1990 | Language: | EN | [1990/50] | Type: | A3 Search report | No.: | EP0401668 | Date: | 02.05.1991 | Language: | EN | [1991/18] | Type: | B1 Patent specification | No.: | EP0401668 | Date: | 30.07.1997 | Language: | EN | [1997/31] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 14.03.1991 | Classification | IPC: | C08B37/00, C08B11/193, C08B31/00 | [1990/50] | CPC: |
C08B37/0096 (EP,US);
C08B11/193 (EP,US);
C08B15/05 (EP,US);
C08B31/12 (EP,US)
| Designated contracting states | BE, DE, FR, GB, IT, NL, SE [1990/50] | Title | German: | Silierte Celluloseether | [1997/31] | English: | Silated cellulose ether | [1997/31] | French: | Ether de cellulose silylés | [1997/31] |
| Former [1990/50] | Silierte Polysaccharide | ||
| Former [1990/50] | Silated polysaccharides | ||
| Former [1990/50] | Polysaccharides silatés | Examination procedure | 06.06.1991 | Examination requested [1991/32] | 06.07.1993 | Despatch of a communication from the examining division (Time limit: M07) | 07.02.1994 | Reply to a communication from the examining division | 24.05.1994 | Despatch of a communication from the examining division (Time limit: M08) | 03.01.1995 | Reply to a communication from the examining division | 13.08.1996 | Despatch of a communication from the examining division (Time limit: M04) | 28.10.1996 | Reply to a communication from the examining division | 28.11.1996 | Date of oral proceedings | 10.12.1996 | Minutes of oral proceedings despatched | 23.12.1996 | Despatch of communication of intention to grant (Approval: Yes) | 05.02.1997 | Communication of intention to grant the patent | 06.05.1997 | Fee for grant paid | 06.05.1997 | Fee for publishing/printing paid | Opposition(s) | 05.05.1998 | No opposition filed within time limit [1998/30] | Fees paid | Renewal fee | 11.05.1992 | Renewal fee patent year 03 | 10.05.1993 | Renewal fee patent year 04 | 09.05.1994 | Renewal fee patent year 05 | 12.04.1995 | Renewal fee patent year 06 | 09.05.1996 | Renewal fee patent year 07 | 07.05.1997 | Renewal fee patent year 08 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | [XP]JP1193301 ; | [AD]FR2354374 (DOW CORNING LTD [GB]); | [Y]EP0105171 (HOECHST AG [DE]); | [Y]EP0119507 (DYNAMIT NOBEL AG [DE]); | [E]EP0385396 (NAT STARCH CHEM INVEST [US]) | [XP] - PATENT ABSTRACTS OF JAPAN, vol. 13, no. 491 (C-650)[3839], 7th November 1989; & JP-A-1 193 301 (NICHIDEN KAGAKU) 03-08-1989, & JP1193301 A 00000000 |