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EP0268999
European procedure
Extract from the Register of European Patents
EP About this file: EP0268999
| EP0268999 - Process for producing t-butyl methacrylate [Right-click to bookmark this link] | Status | Patent revoked Status updated on 29.05.1998 Database last updated on 11.04.2026 | Most recent event Tooltip | 05.10.2005 | Change: Appeal number | Applicant(s) | For all designated states MITSUBISHI RAYON CO., LTD. 3-19, Kyobashi 2-chome, Chuo-ku Tokyo 104-8350 / JP | [N/P] |
| Former [1988/22] | For all designated states MITSUBISHI RAYON CO., LTD. 3-19, Kyobashi 2-chome Chuo-Ku Tokyo 104 / JP | Inventor(s) | 01 /
Inoue, Kazutaka Mitsubishi Rayon Co.,Ltd. 20-1, Miyukicho Otake-shi / JP | 02 /
Sato, Toshihiro Mitsubishi Rayon Co.,Ltd. 20-1, Miyukicho Otake-shi / JP | 03 /
Kobayashi, Masao Mitsubishi Rayon Co.,Ltd. 20-1, Miyukicho Otake-shi / JP | [1988/22] | Representative(s) | Hansen, Bernd, et al Hoffmann Eitle Patent- und Rechtsanwälte Postfach 81 04 20 81904 München / DE | [N/P] |
| Former [1998/03] | Hansen, Bernd, Dr. Dipl.-Chem., et al Hoffmann Eitle, Patent- und Rechtsanwälte, Postfach 81 04 20 81904 München / DE | ||
| Former [1989/17] | Hansen, Bernd, Dr.rer.nat., et al Hoffmann, Eitle & Partner Patentanwälte Postfach 81 04 20 D-81904 München / DE | ||
| Former [1988/22] | Hansen, Bernd, Dr. Dipl.-Chem. Hoffmann, Eitle & Partner Patent- und Rechtsanwälte, Postfach 81 04 20 D-81904 München / DE | Application number, filing date | 87117070.0 | 19.11.1987 | [1988/22] | Priority number, date | JP19860282990 | 27.11.1986 Original published format: JP 28299086 | [1988/22] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0268999 | Date: | 01.06.1988 | Language: | EN | [1988/22] | Type: | A3 Search report | No.: | EP0268999 | Date: | 14.12.1988 | Language: | EN | [1988/50] | Type: | B1 Patent specification | No.: | EP0268999 | Date: | 04.03.1992 | Language: | EN | [1992/10] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 25.10.1988 | Classification | IPC: | C07C69/54, C07C67/04 | [1988/22] | CPC: |
C07C67/04 (EP,US)
| C-Set: |
C07C67/04, C07C69/54 (EP,US)
| Designated contracting states | BE, DE, FR, GB, NL [1988/22] | Title | German: | Herstellungsverfahren von tert.-Butylmethacrylat | [1988/22] | English: | Process for producing t-butyl methacrylate | [1988/22] | French: | Procédé de production du méthacrylate de tert.-butyle | [1988/22] | Examination procedure | 17.04.1989 | Examination requested [1989/25] | 19.09.1990 | Despatch of a communication from the examining division (Time limit: M04) | 21.01.1991 | Reply to a communication from the examining division | 26.04.1991 | Despatch of communication of intention to grant (Approval: Yes) | 29.07.1991 | Communication of intention to grant the patent | 15.10.1991 | Fee for grant paid | 15.10.1991 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
19.11.1992
11.01.1993
ADMISSIBLE BASF Aktiengesellschaft -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE | [N/P] |
| Former [1993/02] | |||
| Opponent(s) | 01
19.11.1992
11.01.1993
ADMISSIBLE BASF Aktiengesellschaft, Ludwigshafen -Patentabteilung - C6- Carl-Bosch-Strasse 38 D-67056 Ludwigshafen / DE | 14.01.1993 | Invitation to proprietor to file observations on the notice of opposition | 20.07.1993 | Reply of patent proprietor to notice(s) of opposition | 27.07.1993 | Communication of observations of patent proprietor (Time limit: M02) | 23.09.1993 | Reply of parties involved to observations of patent proprietor | 17.05.1994 | Date of oral proceedings | 07.06.1994 | Despatch of minutes of oral proceedings | 07.06.1994 | Despatch of communication that the patent will be revoked | 28.04.1998 | Legal effect of revocation of patent [1998/29] | Appeal following opposition | 04.08.1994 | Appeal received No. T0646/94 | 06.10.1994 | Statement of grounds filed | 28.04.1998 | Result of appeal procedure: appeal of the proprietor was rejected | 28.04.1998 | Date of oral proceedings | 04.05.1998 | Minutes of the oral proceedings despatched | Fees paid | Renewal fee | 28.11.1989 | Renewal fee patent year 03 | 30.11.1990 | Renewal fee patent year 04 | 28.11.1991 | Renewal fee patent year 05 |
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