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EP0043751
European procedure
Extract from the Register of European Patents
EP About this file: EP0043751
| EP0043751 - Process for the preparation of high-purity aluminae from ammonium alum [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 28.01.1985 Database last updated on 15.06.2024 | Most recent event Tooltip | 12.11.1999 | Lapse of the patent in a contracting state | published on 29.12.1999 [1999/52] | Applicant(s) | For all designated states CRICERAM 23, rue Balzac F-75008 Paris / FR | [1984/06] |
| Former [1982/02] | For all designated states P C U K PRODUITS CHIMIQUES UGINE KUHLMANN Service Propriété Industrielle Tour Manhattan F-92087 Paris La Défense 2 Cédex 21 / FR | Inventor(s) | 01 /
Bachelard, Roland 99, Grande Rue de la Guillotière F-69007 Lyon / FR | 02 /
Barral, Robert 9, rue des Fleurs Les Hameaux Serezin-du-Rhone F-69360 St-Symphorien d'Ozon / FR | [1982/02] | Representative(s) | Pascaud, Claude, et al PECHINEY 28, rue de Bonnel F-69433 Lyon Cedex 3 / FR | [1984/06] |
| Former [1982/02] | Dorland, Anne-Marie ATOCHEM Service Propriété Industrielle Tour Manhattan Cédex 21 F-92091 Paris la Défense / FR | Application number, filing date | 81401005.4 | 23.06.1981 | [1982/02] | Priority number, date | FR19800014620 | 01.07.1980 Original published format: FR 8014620 | [1982/02] | Filing language | FR | Procedural language | FR | Publication | Type: | A1 Application with search report | No.: | EP0043751 | Date: | 13.01.1982 | Language: | FR | [1982/02] | Type: | B1 Patent specification | No.: | EP0043751 | Date: | 28.03.1984 | Language: | FR | [1984/13] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 12.11.1981 | Classification | IPC: | C01F7/32 | [1982/02] | CPC: |
C01F7/32 (EP,US);
C01P2006/11 (EP,US);
C01P2006/12 (EP,US);
C01P2006/13 (EP,US)
| Designated contracting states | AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE [1982/02] | Title | German: | Verfahren zur Herstellung von Aluminiumoxyden mit grosser Reinheit aus Aluminiumalaun | [1982/02] | English: | Process for the preparation of high-purity aluminae from ammonium alum | [1982/02] | French: | Nouveau procédé de préparation d'alumines de haute pureté à partir d'alun d'ammonium | [1982/02] | Examination procedure | 26.06.1981 | Examination requested [1982/02] | 29.10.1982 | Despatch of a communication from the examining division (Time limit: M05) | 12.03.1983 | Reply to a communication from the examining division | 29.08.1983 | Despatch of communication of intention to grant (Approval: ) | 16.09.1983 | Communication of intention to grant the patent | 17.11.1983 | Fee for grant paid | 17.11.1983 | Fee for publishing/printing paid | Opposition(s) | 29.12.1984 | No opposition filed within time limit [1985/14] | Fees paid | Renewal fee | 07.05.1983 | 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. | Lapses during opposition Tooltip | LU | 30.06.1984 | [1999/52] | Documents cited: | Search | DE933752 [ ] (DEGUSSA); | FR1520669 [ ] (COMP GENERALE ELECTRICITE); | FR2139172 [ ] (MITSUI SHIPBUILDING ENG); | DE2419544 [ ] (POLYSIUS AG) | Examination | - JOURNAL OF APPLIED CHEMISTRY USSR, vol. 48, no. 2, février 1975, G.V. CHEBOTKEVICH: "Thermal decomposition of ammonium alum", pages 415-417 |