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EP0027157
European procedure
Extract from the Register of European Patents
EP About this file: EP0027157
| EP0027157 - Process for selective dealkylation of alkyl-substituted aromatic hydrocarbons [Right-click to bookmark this link] | Status | Patent maintained as amended Status updated on 17.12.1988 Database last updated on 02.09.2024 | Most recent event Tooltip | 17.12.1988 | Patent maintained (B2 publication) | published on 01.02.1989 [1989/05] | Applicant(s) | For all designated states Teijin Petrochemical Industries Ltd. 1-1, 2-chome, Uchisaiwai-cho Chiyoda-ku Tokyo / JP | [N/P] |
| Former [1981/16] | For all designated states Teijin Petrochemical Industries Ltd. 1-1, 2-chome, Uchisaiwai-cho Chiyoda-ku Tokyo / JP | Inventor(s) | 01 /
Onodera, Tamio 2345, Nishihabu-cho Matsuyama-shi, Ehime-ken / JP | 02 /
Sakai, Tokuji 2750-1, Minamiyoshida-cho Matsuyama-shi, Ehime-ken / JP | 03 /
Yamasaki, Yasuo 1898-12, Yodo-cho Matsuyama-shi, Ehime-ken / JP | 04 /
Sumitani, Koji 1362, Yodo-cho Matsuyama-shi, Ehime-ken / JP | 05 /
Sueoka, Minekazu 3-18-4, Tamadaira Hino-shi, Tokyo / JP | [1981/16] | Representative(s) | Kraus, Walter, et al Patentanwälte Kraus, Weisert & Partner Thomas-Wimmer-Ring 15 80539 München / DE | [N/P] |
| Former [1987/20] | Kraus, Walter, Dr., et al Patentanwälte Kraus, Weisert & Partner Thomas-Wimmer-Ring 15 D-80539 München / DE | ||
| Former [1987/06] | DIEHL GLAESER HILTL & PARTNER Patentanwälte Postfach 19 03 65 D-80603 München / DE | ||
| Former [1985/35] | DIEHL GLAESER HILTL & PARTNER Patentanwälte Königstrasse 28 D-22767 Hamburg / DE | ||
| Former [1981/16] | Kohler, Maria, Dr. Dr. M. Kohler Dipl.-Ing. C. Gernhardt Dipl.-Ing. J. Glaeser Herzog-Wilhelm-Strasse 16 D-8000 München 2 / DE | Application number, filing date | 80102348.2 | 30.04.1980 | [1981/16] | Priority number, date | JP19790120805 | 21.09.1979 Original published format: JP 12080579 | [1981/16] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0027157 | Date: | 22.04.1981 | Language: | EN | [1981/16] | Type: | B1 Patent specification | No.: | EP0027157 | Date: | 16.11.1983 | Language: | EN | [1983/46] | Type: | B2 New European patent specification | No.: | EP0027157 | Date: | 01.02.1989 | Language: | EN | [1989/05] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 10.02.1981 | Classification | IPC: | C07C4/18, C07C15/02 | [1981/16] | CPC: |
C07C4/18 (EP,US);
C07C2529/40 (EP,US);
C07C2529/44 (EP,US)
| Designated contracting states | DE, FR, GB, IT, NL [1981/16] | Title | German: | Verfahren zur selektiven Dealkylierung alkyl-substituierter aromatischer Kohlenwasserstoffe | [1981/16] | English: | Process for selective dealkylation of alkyl-substituted aromatic hydrocarbons | [1981/16] | French: | Procédé de désalcoylation sélective d'hydrocarbures aromatiques substitués par de l'alcoyle | [1981/16] | Examination procedure | 28.11.1980 | Examination requested [1981/16] | 07.04.1982 | Despatch of a communication from the examining division (Time limit: M04) | 04.08.1982 | Reply to a communication from the examining division | 07.02.1983 | Despatch of communication of intention to grant (Approval: ) | 02.05.1983 | Communication of intention to grant the patent | 08.07.1983 | Fee for grant paid | 08.07.1983 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
13.08.1984
05.10.1984
ADMISSIBLE Mobil Oil Corporation 150 East 42nd Street New York, N.Y. 10017 / US Opponent's representative Cooper, John Anthony, et al, et al CARPMAELS & RANSFORD 43 Bloomsbury Square London WC1A 2RA / GB | [1984/43] | 08.10.1984 | Invitation to proprietor to file observations on the notice of opposition | 23.04.1985 | Reply of patent proprietor to notice(s) of opposition | 08.05.1985 | Communication of observations of patent proprietor (Time limit: M04) | 18.07.1985 | Reply of parties involved to observations of patent proprietor | 27.06.1986 | Despatch of a communication from the opposition division (Time limit: M05) | 08.12.1986 | Reply to a communication from the opposition division | 26.07.1988 | Despatch of communication that the patent will be maintained as amended | 28.09.1988 | Fee for printing new specification paid | Fees paid | Renewal fee | 25.03.1982 | Renewal fee patent year 03 | 29.03.1983 | Renewal fee patent year 04 |
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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 | US3966833 [ ] (COSYNS JEAN, et al); | FR1389499 [ ] (BRITISH PETROLEUM CO); | AT256069B [ ] (UNION CARBIDE CORP); | DE2558035 [ ] (MOBIL OIL CORP); | DE1493289 [ ]; | DE2745456 [ ] (CATALYSE SOC PROD FRANCAIS) |