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EP0512777
European procedure
Extract from the Register of European Patents
EP About this file: EP0512777
| EP0512777 - Purification of propylene oxide by liquid extraction [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 02.09.1995 Database last updated on 10.05.2025 | Most recent event Tooltip | 02.09.1995 | No opposition filed within time limit | published on 25.10.1995 [1995/43] | Applicant(s) | For all designated states TEXACO CHEMICAL COMPANY 3040 Post Oak Boulevard Houston Texas 77056 / US | [N/P] |
| Former [1992/46] | For all designated states TEXACO CHEMICAL COMPANY 3040 Post Oak Boulevard Houston, Texas 77056 / US | Inventor(s) | 01 /
Smith, William Alan 7910 Petaca Austin, Texas 78759 / US | 02 /
Meyer, Robert Allen 13940 Reflection Drive, Apt. 113 Ballwin, MO 63021 / US | 03 /
Nguyen, Eileen Tovan 3731 Vineyard Houston, Texas 77082 / US | [1992/46] | Representative(s) | Green, Mark Charles, et al Murgitroyd & Company London Euston House 24 Eversholt Street London NW1 1AD / GB | [N/P] |
| Former [1992/46] | Green, Mark Charles, et al Urquhart-Dykes & Lord, 91 Wimpole Street London W1M 8AH / GB | Application number, filing date | 92304000.0 | 01.05.1992 | [1992/46] | Priority number, date | US19910697385 | 09.05.1991 Original published format: US 697385 | [1992/46] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0512777 | Date: | 11.11.1992 | Language: | EN | [1992/46] | Type: | B1 Patent specification | No.: | EP0512777 | Date: | 02.11.1994 | Language: | EN | [1994/44] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.08.1992 | Classification | IPC: | C07D301/32, C07D301/19, C07D303/04 | [1992/46] | CPC: |
B01D3/40 (EP,US);
C07D301/32 (EP,US)
| Designated contracting states | DE, FR, GB [1992/46] | Title | German: | Reinigung von Propylenoxid durch Flüssigextraktion | [1992/46] | English: | Purification of propylene oxide by liquid extraction | [1992/46] | French: | Purification de l'oxyde de propylène par extraction liquide | [1992/46] | Examination procedure | 10.04.1993 | Examination requested [1993/23] | 09.07.1993 | Despatch of a communication from the examining division (Time limit: M04) | 29.10.1993 | Reply to a communication from the examining division | 27.12.1993 | Despatch of communication of intention to grant (Approval: Yes) | 26.04.1994 | Communication of intention to grant the patent | 07.06.1994 | Fee for grant paid | 07.06.1994 | Fee for publishing/printing paid | Opposition(s) | 03.08.1995 | No opposition filed within time limit [1995/43] | Fees paid | Renewal fee | 29.03.1994 | 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]US3464897 (JUBIN JOHN C JR); | [A]US3541114 (TAYLOR WALLACE E, et al); | [AD]US3843488 (SCHMIDT J, et al) |