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EP0071899
European procedure
Extract from the Register of European Patents
EP About this file: EP0071899
| EP0071899 - Process for the preparation of low molecular weight 4.4'diphenyl-methane-uretdione diisocyanates [Right-click to bookmark this link] | Status | Opposition procedure closed Status updated on 26.01.1988 Database last updated on 22.08.2024 | Most recent event Tooltip | 07.11.1997 | Lapse of the patent in a contracting state | published on 29.12.1997 [1997/52] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1983/07] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Grögler, Gerhard, Dr. von-Diergardt-Strasse 46 D-5090 Leverkusen 1 / DE | 02 /
Kopp, Richard, Dr. Wolfskaul 12 D-5000 Köln 80 / DE | [1983/07] | Application number, filing date | 82106878.0 | 30.07.1982 | [1983/07] | Priority number, date | DE19813131779 | 12.08.1981 Original published format: DE 3131779 | [1983/07] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0071899 | Date: | 16.02.1983 | Language: | DE | [1983/07] | Type: | B1 Patent specification | No.: | EP0071899 | Date: | 20.03.1985 | Language: | DE | [1985/12] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 09.12.1982 | Classification | IPC: | C07D229/00, C08G18/79 | [1983/07] | CPC: |
C07D229/00 (EP,US);
C08G18/798 (EP,US)
| Designated contracting states | BE, DE, FR, GB, IT, NL [1983/07] | Title | German: | Verfahren zur Herstellung von niedermolekularen 4,4'-Diphenylmethan-uretdion-diisocyanaten | [1983/07] | English: | Process for the preparation of low molecular weight 4.4'diphenyl-methane-uretdione diisocyanates | [1983/07] | French: | Procédé de préparation de diisocyanates de 4.4'diphénylméthane-urétdione à bas poids moléculaire | [1983/07] | Examination procedure | 30.07.1982 | Examination requested [1983/07] | 27.01.1984 | Despatch of a communication from the examining division (Time limit: M02) | 28.02.1984 | Reply to a communication from the examining division | 04.06.1984 | Despatch of communication of intention to grant (Approval: ) | 22.08.1984 | Communication of intention to grant the patent | 30.08.1984 | Fee for grant paid | 30.08.1984 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
17.12.1985
17.01.1986
ADMISSIBLE BASF Aktiengesellschaft -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE | [N/P] |
| Former [1986/08] | |||
| Opponent(s) | 01
17.12.1985
17.01.1986
ADMISSIBLE BASF Aktiengesellschaft, Ludwigshafen -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE | 20.01.1986 | Invitation to proprietor to file observations on the notice of opposition | 14.04.1986 | Reply of patent proprietor to notice(s) of opposition | 22.04.1986 | Communication of observations of patent proprietor (Time limit: M02) | 30.05.1986 | Reply of parties involved to observations of patent proprietor | 21.10.1986 | Despatch of a communication from the opposition division (Time limit: M04) | 18.11.1986 | Reply to a communication from the opposition division | 19.10.1987 | Despatch of communication that the opposition procedure will be closed | 29.10.1987 | Legal effect of closure of opposition procedure [1988/11] | Fees paid | Renewal fee | 25.06.1984 | Renewal fee patent year 03 |
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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 | [AD]DE1445721 (BAYER AG); | [A]GB1207673 (ICI LTD [GB]); | [A]FR2268838 (BASF AG [DE]) |