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EP0428958
European procedure
Extract from the Register of European Patents
EP About this file: EP0428958
| EP0428958 - Polar aprotic catalysts for formation of fluorosilicone fluids [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 08.03.1996 Database last updated on 03.09.2024 | Most recent event Tooltip | 08.11.1996 | Lapse of the patent in a contracting state New state(s): BE | published on 27.12.1996 [1996/52] | Applicant(s) | For all designated states GENERAL ELECTRIC COMPANY 1 River Road Schenectady, NY 12345 / US | [N/P] |
| Former [1991/22] | For all designated states GENERAL ELECTRIC COMPANY 1 River Road Schenectady, NY 12345 / US | Inventor(s) | 01 /
Evans, Edwin Robert 9 Rodriso Court Clifton Park, New York 12065 / US | 02 /
Maitoza, Paul 28 Pinehurst Drive Clifton Park, New York 12065 / US | [1991/22] | Representative(s) | Pratt, Richard Wilson, et al London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA / GB | [N/P] |
| Former [1994/32] | Pratt, Richard Wilson, et al London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA / GB | ||
| Former [1992/30] | Pratt, Richard Wilson London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA / GB | ||
| Former [1991/22] | Schüler, Horst, Dr. Patentanwalt, Kaiserstrasse 69 D-60329 Frankfurt / DE | Application number, filing date | 90121543.4 | 10.11.1990 | [1991/22] | Priority number, date | US19890439968 | 20.11.1989 Original published format: US 439968 | [1991/22] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0428958 | Date: | 29.05.1991 | Language: | EN | [1991/22] | Type: | A3 Search report | No.: | EP0428958 | Date: | 21.11.1991 | Language: | EN | [1991/47] | Type: | B1 Patent specification | No.: | EP0428958 | Date: | 03.05.1995 | Language: | EN | [1995/18] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 02.10.1991 | Classification | IPC: | C08G77/08, C08G77/24 | [1991/22] | CPC: |
C08G77/08 (EP,US);
C08F4/00 (KR);
C07F7/21 (EP,US);
C08G77/045 (EP,US);
C08G77/24 (EP,US)
| Designated contracting states | BE, DE, FR, GB, NL [1991/22] | Title | German: | Aprotische polare Katalysatoren für die Herstellung von flüssigen Fluorosiliconen | [1991/22] | English: | Polar aprotic catalysts for formation of fluorosilicone fluids | [1991/22] | French: | Catalyseurs aprotiques polaires pour la préparation de liquides fluorosilicones | [1991/22] | File destroyed: | 20.04.2002 | Examination procedure | 20.12.1991 | Examination requested [1992/09] | 15.04.1993 | Despatch of a communication from the examining division (Time limit: M04) | 16.08.1993 | Reply to a communication from the examining division | 19.01.1994 | Despatch of a communication from the examining division (Time limit: M04) | 16.05.1994 | Reply to a communication from the examining division | 19.07.1994 | Despatch of communication of intention to grant (Approval: Yes) | 27.10.1994 | Communication of intention to grant the patent | 06.02.1995 | Fee for grant paid | 06.02.1995 | Fee for publishing/printing paid | Opposition(s) | 06.02.1996 | No opposition filed within time limit [1996/17] | Fees paid | Renewal fee | 19.11.1992 | Renewal fee patent year 03 | 04.11.1993 | Renewal fee patent year 04 | 30.11.1994 | Renewal fee patent year 05 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | DE | 04.08.1995 | GB | 10.11.1995 | BE | 30.11.1995 | [1996/52] |
| Former [1996/47] | DE | 04.08.1995 | |
| GB | 10.11.1995 | ||
| Former [1996/01] | DE | 04.08.1995 | Documents cited: | Search | [A]US2863897 (WEHRLY JACK R); | [A]FR1535211 (DOW CORNING); | [A]GB1212421 (TOKYO SHIBAURA ELECTRIC CO [JP]); | [A]US3974120 (RAZZANO JOHN S, et al); | [A]GB2065153 (GEN ELECTRIC) | [A] - POLYMER SCIENCE USSR, vol. 12, no. 7, April 1970, pages 1800 - 1809, Oxford, GB; Y.A. YUZHELEVSKII et al.: 'Activators of the anionic polymerization of cyclosiloxanes' |