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EP0350635
European procedure
Extract from the Register of European Patents
EP About this file: EP0350635
| EP0350635 - Process for the preparation of acetic acid and acetic anhydride [Right-click to bookmark this link] | Status | Patent maintained as amended Status updated on 31.05.2002 Database last updated on 14.05.2024 | Most recent event Tooltip | 05.10.2005 | Change: Appeal number | Applicant(s) | For all designated states Celanese Chemicals Europe GmbH Lurgiallee 14 60439 Frankfurt am Main / DE | [1999/48] |
| Former [1990/03] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Erpenbach, Heinz, Dr. Oberbuschweg 22 D-5000 Köln / DE | 02 /
Gehrmann, Klaus, Dr. Geschwister-Scholl-Strasse 32 D-5042 Erftstadt / DE | 03 /
Jägers, Erhard, Dr. Hemberger Strasse 75 D-5303 Bornheim / DE | 04 /
Kohl, Georg Rosellstrasse 11 D-5030 Hürth / DE | [1990/03] | Application number, filing date | 89110743.5 | 14.06.1989 | [1990/03] | Priority number, date | DE19883823645 | 13.07.1988 Original published format: DE 3823645 | [1990/03] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0350635 | Date: | 17.01.1990 | Language: | DE | [1990/03] | Type: | B1 Patent specification | No.: | EP0350635 | Date: | 29.09.1993 | Language: | DE | [1993/39] | Type: | B2 New European patent specification | No.: | EP0350635 | Date: | 17.07.2002 | Language: | DE | [2002/29] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 04.10.1989 | Classification | IPC: | C07C53/08, C07C53/12, C07C51/12, C07C51/56 | [1990/03] | CPC: |
C07C51/12 (EP,US);
C07C53/08 (KR);
C07C51/56 (EP,US);
C07C53/12 (KR)
| C-Set: |
C07C51/12, C07C53/08 (EP,US);
C07C51/56, C07C53/12 (US,EP) | Designated contracting states | AT, BE, CH, DE, ES, FR, GB, IT, LI, NL, SE [1990/03] | Title | German: | Verfahren zur Herstellung von Essigsäure und Essigsäureanhydrid | [1990/03] | English: | Process for the preparation of acetic acid and acetic anhydride | [1990/03] | French: | Procédé de préparation de l'acide acétique et de l'anhydride acétique | [1990/03] | Examination procedure | 30.01.1990 | Examination requested [1990/13] | 17.03.1992 | Despatch of a communication from the examining division (Time limit: M04) | 04.04.1992 | Reply to a communication from the examining division | 10.02.1993 | Despatch of communication of intention to grant (Approval: Yes) | 24.03.1993 | Communication of intention to grant the patent | 03.05.1993 | Fee for grant paid | 03.05.1993 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
23.06.1994
28.07.1994
ADMISSIBLE BP Chemicals Ltd Britannic House, 1 Finsbury Circus GB-London EC2M 7BA / GB Opponent's representative Perkins, Nicholas David BP International Limited Patents and Agreements Division Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN / GB | [N/P] |
| Former [1994/33] | |||
| Opponent(s) | 01
23.06.1994
28.07.1994
ADMISSIBLE BP CHemicals Ltd Britannic House, 1 Finsbury Circus GB-London EC2M 7BA / GB Opponent's representative Perkins, Nicholas David BP International Limited Patents and Agreements Division, Chertsey Road Sunbury-on-Thames, Middlesex TW16 7LN / GB | 02.08.1994 | Invitation to proprietor to file observations on the notice of opposition | 02.02.1995 | Reply of patent proprietor to notice(s) of opposition | 28.02.1995 | Communication of observations of patent proprietor (Time limit: M04) | 26.05.1995 | Reply of parties involved to observations of patent proprietor | 13.02.1996 | Date of oral proceedings | 26.02.1996 | Despatch of minutes of oral proceedings | 26.02.1996 | Despatch of communication that the patent will be revoked | 26.06.2000 | Despatch of a communication from the opposition division (Time limit: M04) | 14.07.2000 | Reply to a communication from the opposition division | 08.12.2000 | Despatch of a communication from the opposition division (Time limit: M02) | 18.05.2001 | Despatch of interlocutory decision in opposition | 28.05.2001 | Legal effect of interlocutory decision in opposition | 17.09.2001 | Despatch of communication that the patent will be maintained as amended | 07.12.2001 | Fee for printing new specification paid | Appeal following opposition | 26.04.1996 | Appeal received No. T0364/96 | 27.06.1996 | Statement of grounds filed | 07.06.2000 | Interlocutory revision of appeal | 07.06.2000 | Result of appeal procedure: maintenance in amended form | 03.05.2000 | Date of oral proceedings | 12.05.2000 | Minutes of the oral proceedings despatched | Fees paid | Renewal fee | 21.12.1990 | Renewal fee patent year 03 | 14.05.1992 | Renewal fee patent year 04 | 19.05.1993 | Renewal fee patent year 05 |
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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 | [A]DE921938 (BASF AG); | [AD]EP0087869 (BP CHEM INT LTD [GB]); | [X]EP0170965 (HOECHST AG [DE]); | [A]EP0173170 (UNION CARBIDE CORP [US]) | Opposition | AU4588789 | GB906008 | DE2450965 | DE2836084 | DE2939839 | US4549937 | JPS6158803 | US4615806 | CA1214472 | EP0217191 |