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EP0114925
European procedure
Extract from the Register of European Patents
EP About this file: EP0114925
| EP0114925 - Process for making anhydrous alkanesulfonic acids [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 23.06.1987 Database last updated on 19.03.2026 | Most recent event Tooltip | 23.06.1987 | No opposition filed within time limit | published on 12.08.1987 [1987/33] | Applicant(s) | For all designated states PENNWALT CORPORATION Pennwalt Building Three Parkway Philadelphia Pennsylvania 19102 / US | [N/P] |
| Former [1984/32] | For all designated states PENNWALT CORPORATION Pennwalt Building Three Parkway Philadelphia Pennsylvania 19102 / US | Inventor(s) | 01 /
Mahlzahn, Dale E. 4147 Mayfair Dearborn Heights MI 48127 / US | [1984/32] | Representative(s) | Kraus, Walter, et al Patentanwälte Kraus, Weisert & Partner Thomas-Wimmer-Ring 15 80539 München / DE | [N/P] |
| Former [1984/32] | Kraus, Walter, Dr., et al Patentanwälte Kraus, Weisert & Partner Thomas-Wimmer-Ring 15 D-80539 München / DE | Application number, filing date | 83108385.2 | 25.08.1983 | [1984/32] | Priority number, date | US19830461776 | 28.01.1983 Original published format: US 461776 | [1984/32] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0114925 | Date: | 08.08.1984 | Language: | EN | [1984/32] | Type: | B1 Patent specification | No.: | EP0114925 | Date: | 27.08.1986 | Language: | EN | [1986/35] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 16.05.1984 | Classification | IPC: | C07C143/02, C07C139/14 | [1984/32] | CPC: |
C07C303/42 (EP,US)
| Designated contracting states | BE, DE, FR, GB, IT, NL, SE [1984/32] | Title | German: | Verfahren zur Herstellung von wasserfreien Alkansulfonsäuren | [1984/32] | English: | Process for making anhydrous alkanesulfonic acids | [1984/32] | French: | Procédé pour préparer des acides alcanesulphoniques anhydres | [1984/32] | Examination procedure | 10.12.1984 | Examination requested [1985/08] | 10.07.1985 | Despatch of a communication from the examining division (Time limit: M02) | 16.09.1985 | Reply to a communication from the examining division | 15.11.1985 | Despatch of communication of intention to grant (Approval: ) | 27.02.1986 | Communication of intention to grant the patent | 28.04.1986 | Fee for grant paid | 28.04.1986 | Fee for publishing/printing paid | Opposition(s) | 28.05.1987 | No opposition filed within time limit [1987/33] | Fees paid | Renewal fee | 29.07.1985 | Renewal fee patent year 03 | 06.06.1986 | Renewal fee patent year 04 |
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