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EP0150442
European procedure
Extract from the Register of European Patents
EP About this file: EP0150442
| EP0150442 - Crystalline silica, its salts and method of preparing same [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.12.1989 Database last updated on 22.05.2024 | Most recent event Tooltip | 12.12.1989 | No opposition filed within time limit | published on 31.01.1990 [1990/05] | Applicant(s) | For all designated states HOECHST AKTIENGESELLSCHAFT 65926 Frankfurt am Main / DE | [N/P] |
| Former [1985/32] | For all designated states HOECHST AKTIENGESELLSCHAFT D-65926 Frankfurt am Main / DE | Inventor(s) | 01 /
Dr. Rieck, Hans-Peter Staufenstrasse 13a D-6238 Hofheim am Taunus / DE | [1985/32] | Application number, filing date | 84115780.3 | 19.12.1984 | [1985/32] | Priority number, date | DE19843400130 | 04.01.1984 Original published format: DE 3400130 | [1985/32] | Filing language | DE | Procedural language | DE | Publication | Type: | A1 Application with search report | No.: | EP0150442 | Date: | 07.08.1985 | Language: | DE | [1985/32] | Type: | B1 Patent specification | No.: | EP0150442 | Date: | 15.02.1989 | Language: | DE | [1989/07] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 23.05.1985 | Classification | IPC: | C01B33/18, C01B33/187, C01B33/32 | [1985/32] | CPC: |
C01B33/12 (EP,US);
C01B33/38 (EP,US)
| Designated contracting states | BE, CH, DE, FR, GB, IT, LI, NL, SE [1985/32] | Title | German: | Kristalline Kieselsäure, ihre Salze und Verfahren zu ihrer Herstellung | [1985/32] | English: | Crystalline silica, its salts and method of preparing same | [1985/32] | French: | Silice cristalline, ses sels, et méthode d'obtention | [1985/32] | Examination procedure | 16.01.1986 | Examination requested [1986/12] | 16.01.1987 | Despatch of a communication from the examining division (Time limit: M04) | 23.02.1987 | Reply to a communication from the examining division | 09.10.1987 | Despatch of a communication from the examining division (Time limit: M04) | 19.02.1988 | Reply to a communication from the examining division | 11.04.1988 | Despatch of communication of intention to grant (Approval: Yes) | 10.08.1988 | Communication of intention to grant the patent | 19.10.1988 | Fee for grant paid | 19.10.1988 | Fee for publishing/printing paid | Opposition(s) | 16.11.1989 | No opposition filed within time limit [1990/05] | Fees paid | Renewal fee | 13.11.1986 | Renewal fee patent year 03 | 11.11.1987 | Renewal fee patent year 04 | 12.11.1988 | 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 | [AD]DE2742912 ; | [A]DE1041930 (COLUMBIA SOUTHERN CHEM CORP); | [A]DE2743143 (UNION CARBIDE CORP); | [AD]US4061724 (GROSE ROBERT WILLIAM, et al) |