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EP0399284
European procedure
Extract from the Register of European Patents
EP About this file: EP0399284
| EP0399284 - Method for the production of geminal diarylalkanes, geminal diarylalkanes and alk(en)ylated aromatic compounds [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 07.06.1996 Database last updated on 10.03.2026 | Most recent event Tooltip | 28.12.2002 | Lapse of the patent in a contracting state New state(s): NL | published on 12.02.2003 [2003/07] | Applicant(s) | For all designated states BAYER AG 51368 Leverkusen / DE | [N/P] |
| Former [1990/48] | For all designated states BAYER AG D-51368 Leverkusen / DE | Inventor(s) | 01 /
Arlt, Dieter, Prof. Dr. Rybniker Strasse 2 D-5000 Köln 80 / DE | [1990/48] | Application number, filing date | 90108628.0 | 08.05.1990 | [1990/48] | Priority number, date | DE19893916557 | 20.05.1989 Original published format: DE 3916557 | [1990/48] | Filing language | DE | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0399284 | Date: | 28.11.1990 | Language: | DE | [1990/48] | Type: | A3 Search report | No.: | EP0399284 | Date: | 27.11.1991 | Language: | DE | [1991/48] | Type: | B1 Patent specification | No.: | EP0399284 | Date: | 02.08.1995 | Language: | DE | [1995/31] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 07.10.1991 | Classification | IPC: | C07C22/04, C07C25/02, C07C15/16 | [1990/48] | CPC: |
C07C2/861 (EP,US);
C07C15/16 (EP,US);
C07C17/00 (EP,US);
C07C17/266 (EP,US);
C07C17/269 (EP,US);
C07C17/361 (EP,US);
C07C41/30 (EP,US)
(-)
| C-Set: |
C07C17/00, C07C22/04 (US,EP);
C07C17/00, C07C25/18 (US,EP);
C07C17/266, C07C22/04 (US,EP);
C07C17/269, C07C25/18 (EP,US);
C07C17/361, C07C21/08 (EP,US);
C07C2/861, C07C15/16 (US,EP); | Designated contracting states | BE, CH, DE, ES, FR, GB, IT, LI, NL [1990/48] | Title | German: | Verfahren zur Herstellung von geminalen Diarylalkanen, neue geminale Diarylalkane und alk(en)ylierte aromatische Verbindungen | [1990/48] | English: | Method for the production of geminal diarylalkanes, geminal diarylalkanes and alk(en)ylated aromatic compounds | [1990/48] | French: | Procédé pour la fabrication de diarylalkanes géminales, diarylalkanes géminales et composés aromatiques alk(én)ylés | [1990/48] | Examination procedure | 08.05.1990 | Examination requested [1990/48] | 28.09.1993 | Despatch of a communication from the examining division (Time limit: M04) | 27.12.1993 | Reply to a communication from the examining division | 31.01.1994 | Despatch of a communication from the examining division (Time limit: M04) | 27.04.1994 | Reply to a communication from the examining division | 04.07.1994 | Despatch of communication of intention to grant (Approval: Yes) | 08.08.1994 | Communication of intention to grant the patent | 06.10.1994 | Fee for grant paid | 06.10.1994 | Fee for publishing/printing paid | Opposition(s) | 03.05.1996 | No opposition filed within time limit [1996/30] | Fees paid | Renewal fee | 21.04.1992 | Renewal fee patent year 03 | 14.04.1993 | Renewal fee patent year 04 | 20.04.1994 | Renewal fee patent year 05 | 13.04.1995 | Renewal fee patent year 06 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| 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 | ES | 02.08.1995 | NL | 02.08.1995 | [2003/07] |
| Former [2002/24] | ES | 02.08.1995 | Documents cited: | Search | [AD] JOURNAL OF ORGANIC CHEMISTRY. vol. 26, no. 5, Mai 1961, EASTON US Seiten 1398 - 1401; A.T. Coscia et al.: "The synthesis of 2,2-ditolylpropane from alpha,p-dimethylstyrene" | [AD] JOURNAL OF ORGANIC CHEMISTRY. vol. 41, no. 10, 14 Mai 1976, EASTON US Seiten 1698 - 1701; R.M. Roberts et al.: "Friedel-Crafts alkylations with vinyl halides. 1. Vinyl cations and spirobiindans" |