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EP0251952
European procedure
Extract from the Register of European Patents
EP About this file: EP0251952
| EP0251952 - Process for the preparation of polyisocyanates having a biuret structure [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 03.08.1993 Database last updated on 20.12.2024 | Most recent event Tooltip | 11.12.1999 | Lapse of the patent in a contracting state New state(s): GR | published on 26.01.2000 [2000/04] | Applicant(s) | For all designated states RHONE-POULENC CHIMIE 25, Quai Paul Doumer 92408 Courbevoie Cédex / FR | [N/P] |
| Former [1988/01] | For all designated states RHONE-POULENC CHIMIE 25, Quai Paul Doumer F-92408 Courbevoie Cédex / FR | Inventor(s) | 01 /
Robin, Jean 21, rue Duguesclin F-69006 Lyon / FR | [1988/01] | Representative(s) | Vignally, Noel, et al Rhône-Poulenc Interservices Service Brevets Chimie Centre de Recherches des Carrières B.P. 62 69192 Saint-Fons Cédex / FR | [N/P] |
| Former [1988/01] | Vignally, Noel, et al Rhône-Poulenc Interservices Service Brevets Chimie Centre de Recherches des Carrières B.P. 62 F-69192 Saint-Fons Cédex / FR | Application number, filing date | 87420184.1 | 01.07.1987 | [1988/01] | Priority number, date | FR19860009947 | 04.07.1986 Original published format: FR 8609947 | [1988/01] | Filing language | FR | Procedural language | FR | Publication | Type: | A2 Application without search report | No.: | EP0251952 | Date: | 07.01.1988 | Language: | FR | [1988/01] | Type: | A3 Search report | No.: | EP0251952 | Date: | 07.09.1988 | Language: | FR | [1988/36] | Type: | B1 Patent specification | No.: | EP0251952 | Date: | 30.09.1992 | Language: | FR | [1992/40] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.07.1988 | Classification | IPC: | C07C275/62, C08G18/78 | [1992/40] | CPC: |
C08G18/7831 (EP,US);
C07C265/10 (KR);
C07C273/1809 (EP,US)
| C-Set: |
C07C273/1809, C07C275/62 (EP,US)
|
| Former IPC [1988/01] | C07C127/24 | Designated contracting states | AT, BE, CH, DE, ES, FR, GB, GR, IT, LI, LU, NL, SE [1988/01] | Title | German: | Verfahren zur Herstellung von Polyisocyanaten mit Biuretstruktur | [1988/01] | English: | Process for the preparation of polyisocyanates having a biuret structure | [1988/01] | French: | Procédé de préparation de polyisocyanate à groupement biuret | [1988/01] | Examination procedure | 22.04.1988 | Examination requested [1988/26] | 20.07.1990 | Despatch of a communication from the examining division (Time limit: M06) | 15.01.1991 | Reply to a communication from the examining division | 03.06.1991 | Despatch of a communication from the examining division (Time limit: M04) | 13.09.1991 | Reply to a communication from the examining division | 09.01.1992 | Despatch of communication of intention to grant (Approval: Yes) | 23.03.1992 | Communication of intention to grant the patent | 29.05.1992 | Fee for grant paid | 29.05.1992 | Fee for publishing/printing paid | Opposition(s) | 01.07.1993 | No opposition filed within time limit [1993/38] | Fees paid | Renewal fee | 02.05.1989 | Renewal fee patent year 03 | 25.07.1990 | Renewal fee patent year 04 | 22.07.1991 | Renewal fee patent year 05 | 20.07.1992 | Renewal fee patent year 06 |
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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. | Lapses during opposition Tooltip | AT | 30.09.1992 | GR | 30.09.1992 | NL | 30.09.1992 | SE | 30.09.1992 | [2000/04] |
| Former [1994/18] | AT | 30.09.1992 | |
| NL | 30.09.1992 | ||
| SE | 30.09.1992 | ||
| Former [1993/21] | NL | 30.09.1992 | |
| SE | 30.09.1992 | ||
| Former [1993/16] | SE | 30.09.1992 | Documents cited: | Search | [X]EP0157088 (BAYER AG [DE]) |