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EP0644158
European procedure
Extract from the Register of European Patents
EP About this file: EP0644158
| EP0644158 - Process for the preparation of zirconia [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 04.12.1998 Database last updated on 19.07.2024 | Most recent event Tooltip | 04.12.1998 | No opposition filed within time limit | published on 20.01.1999 [1999/03] | Applicant(s) | For all designated states Shell Internationale Research Maatschappij B.V. Carel van Bylandtlaan 30 2596 HR Den Haag / NL | [N/P] |
| Former [1998/05] | For all designated states SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. Carel van Bylandtlaan 30 2596 HR Den Haag / NL | ||
| Former [1995/12] | For all designated states SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. Carel van Bylandtlaan 30 NL-2596 HR Den Haag / NL | Inventor(s) | 01 /
Blankenstein, Paul Badhuisweg 3 1031 CM Amsterdam / NL | 02 /
Rek, Paulus Johannes Maria Badhuisweg 3 1031 CM Amsterdam / NL | [1995/12] | Application number, filing date | 94202685.7 | 19.09.1994 | [1995/12] | Priority number, date | EP19930202731 | 21.09.1993 Original published format: EP 93202731 | [1995/12] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0644158 | Date: | 22.03.1995 | Language: | EN | [1995/12] | Type: | B1 Patent specification | No.: | EP0644158 | Date: | 28.01.1998 | Language: | EN | [1998/05] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 07.12.1994 | Classification | IPC: | C01G25/02, C04B35/486, C04B35/624, B01J21/06 | [1995/12] | CPC: |
B01J23/75 (EP,US);
B01J21/066 (EP,US);
C01G25/02 (EP,US);
C04B35/624 (EP,US);
C07C53/10 (EP,US);
C07C53/122 (EP,US);
B01J35/613 (EP,US);
B01J35/633 (EP,US);
B01J35/657 (EP,US);
B01J37/0009 (EP,US);
B01J37/036 (EP,US);
C01P2006/10 (EP,US);
C01P2006/12 (EP,US);
C01P2006/14 (EP,US);
C01P2006/16 (EP,US);
C01P2006/90 (EP,US)
(-)
| Designated contracting states | BE, CH, DE, DK, FR, GB, IT, LI, NL, SE [1995/12] | Title | German: | Verfahren zur Herstellung von Zirkoniumoxid | [1995/12] | English: | Process for the preparation of zirconia | [1995/12] | French: | Procédé de préparation de zircone | [1995/12] | Examination procedure | 31.05.1994 | Despatch of a communication from the examining division (Time limit: M04) | 13.07.1995 | Examination requested [1995/36] | 31.05.1996 | Despatch of a communication from the examining division (Time limit: M06) | 06.12.1996 | Reply to a communication from the examining division | 19.03.1997 | Despatch of communication of intention to grant (Approval: Yes) | 20.06.1997 | Communication of intention to grant the patent | 12.08.1997 | Fee for grant paid | 12.08.1997 | Fee for publishing/printing paid | Opposition(s) | 29.10.1998 | No opposition filed within time limit [1999/03] | Fees paid | Renewal fee | 27.09.1996 | Renewal fee patent year 03 | 25.09.1997 | Renewal fee patent year 04 |
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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 | [DA]US2467089 (MARISIC MILTON M, et al); | SU867880 [ ] (POKHODENKO VLADIMIR N [SU], et al); | [A]FR2661171 (ELF AQUITAINE [FR]); | [DA]EP0510772 (SHELL INT RESEARCH [NL]) | [A] - "zirconium dioxide", CHEMICAL ABSTRACTS, (19820322), vol. 096, no. 12, Database accession no. 87935n, page 145 [A] 1-3 * abstract * |