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EP0657414
European procedure
Extract from the Register of European Patents
EP About this file: EP0657414
| EP0657414 - Process for preparing dialkyl dicarbonates [Right-click to bookmark this link] | |||
| Former [1995/24] | Process for preparing Dialkyl dicarbonates | ||
| [1997/43] | Status | No opposition filed within time limit Status updated on 28.08.1998 Database last updated on 09.07.2024 | Most recent event Tooltip | 28.08.1998 | No opposition filed within time limit | published on 14.10.1998 [1998/42] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [1997/43] |
| Former [1995/24] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Pies, Michael, Dr. Am Bollheister 36 D-47249 Duisburg / DE | 02 /
Fiege, Helmut, Dr. Walter-Flex-Strasse 23 D-51373 Leverkusen / DE | 03 /
Käsbauer, Josef, Dr. Gartenfeld 37 D-42929 Wermelskirchen / DE | 04 /
Merz, Gebhard, Dr. Blumentalstrasse 47 D-47798 Krefeld / DE | [1995/24] | Application number, filing date | 94118584.5 | 25.11.1994 | [1995/24] | Priority number, date | DE19934341747 | 08.12.1993 Original published format: DE 4341747 | [1995/24] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0657414 | Date: | 14.06.1995 | Language: | DE | [1995/24] | Type: | B1 Patent specification | No.: | EP0657414 | Date: | 22.10.1997 | Language: | DE | [1997/43] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 20.03.1995 | Classification | IPC: | C07C68/02 | [1995/24] | CPC: |
C07C68/02 (EP,US)
| C-Set: |
C07C68/02, C07C69/96 (EP,US)
| Designated contracting states | CH, DE, ES, FR, GB, IT, LI, NL [1995/24] | Title | German: | Verfahren zur Herstellung von Dialkyldicarbonaten | [1995/24] | English: | Process for preparing dialkyl dicarbonates | [1997/43] | French: | Procédé de préparation de dicarbonates de dialcoyle | [1995/24] |
| Former [1995/24] | Process for preparing Dialkyl dicarbonates | Examination procedure | 27.11.1995 | Examination requested [1996/04] | 27.12.1996 | Despatch of communication of intention to grant (Approval: Yes) | 11.04.1997 | Communication of intention to grant the patent | 11.06.1997 | Fee for grant paid | 11.06.1997 | Fee for publishing/printing paid | Opposition(s) | 23.07.1998 | No opposition filed within time limit [1998/42] | Fees paid | Renewal fee | 17.10.1996 | 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 | [A]DE1418849 (BAYER AG) [A] 1-8 * claim 1 * * example 2 *; | [A]EP0468404 (SUMITOMO CHEMICAL CO [JP]) [A] 1-8* table 2 * | [DA] - D. PLUSQUELLEC ET AL., "A new Synthesis of Carboxylic and Carbonic Acid anhydrides using Phase Transfer Reactions", TETRATHEDRON, (1988), vol. 44, no. 9 [DA] 1-8 * the whole document * | by applicant | - TETRAHEDRON, (1988), vol. 44, no. 9, pages 2471 - 2476 |