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EP0440235
European procedure
Extract from the Register of European Patents
EP About this file: EP0440235
| EP0440235 - Preparation of silicon nitride powder [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 04.06.1994 Database last updated on 02.11.2024 | Most recent event Tooltip | 07.03.1997 | Lapse of the patent in a contracting state | published on 23.04.1997 [1997/17] | Applicant(s) | For all designated states Shin-Etsu Chemical Co., Ltd. 6-1, Otemachi 2-chome Chiyoda-ku Tokyo / JP | [N/P] |
| Former [1991/32] | For all designated states SHIN-ETSU CHEMICAL CO., LTD. 6-1, Ohtemachi 2-chome Chiyoda-ku Tokyo / JP | Inventor(s) | 01 /
Fukuoka, Hirofumi A-207, Sakuragaoka Ryo, No. 12-37, Isobe 3-chome Annaka-shi, Gunma-ken / JP | 02 /
Shimizu, Mutsuo A-1-3, Koufuu Apt. no. 791-4, Yanase Annaka-shi, Gunma-ken / JP | 03 /
Ochiai, Hidemitsu No. 2076-6, Haraichi Annaka-shi, Gunma-ken / JP | 04 /
Shimizu, Hideaki No. 375, Kamitakada, Myougi-cho Kanra-gun, Gunma-ken / JP | 05 /
Fukuhira, Masanori No. 3493-37, Ishihara-machi Takasaki-shi, Gunma-ken / JP | [1991/32] | Representative(s) | Ter Meer Steinmeister & Partner Patentanwälte mbB Nymphenburger Strasse 4 80335 München / DE | [N/P] |
| Former [1991/32] | TER MEER - MÜLLER - STEINMEISTER & PARTNER Mauerkircherstrasse 45 D-81679 München / DE | Application number, filing date | 91101303.5 | 31.01.1991 | [1991/32] | Priority number, date | JP19900021864 | 31.01.1990 Original published format: JP 2186490 | [1991/32] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0440235 | Date: | 07.08.1991 | Language: | EN | [1991/32] | Type: | A3 Search report | No.: | EP0440235 | Date: | 04.03.1992 | Language: | EN | [1992/10] | Type: | B1 Patent specification | No.: | EP0440235 | Date: | 04.08.1993 | Language: | EN | [1993/31] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 14.01.1992 | Classification | IPC: | C01B21/068 | [1991/32] | CPC: |
C01B21/0682 (EP,US)
| Designated contracting states | DE, FR, GB [1991/32] | Title | German: | Herstellung von Siliciumnitridpulver | [1991/32] | English: | Preparation of silicon nitride powder | [1991/32] | French: | Préparation de poudre de nitrure de silicium | [1991/32] | Examination procedure | 08.04.1992 | Examination requested [1992/24] | 22.10.1992 | Despatch of communication of intention to grant (Approval: Yes) | 10.02.1993 | Communication of intention to grant the patent | 06.05.1993 | Fee for grant paid | 06.05.1993 | Fee for publishing/printing paid | Opposition(s) | 05.05.1994 | No opposition filed within time limit [1994/30] | Fees paid | Renewal fee | 15.01.1993 | 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. | Documents cited: | Search | [D]JP61266305 ; | [AD]JP60186406 ; | [A]EP0186497 (ONODA CEMENT CO LTD [JP]) | [D] - PATENT ABSTRACTS OF JAPAN vol. 11, no. 132 (C-417)(2579), 24 April 1987; & JP - A - 61266305 (ONODA CEMENT CO LTD) 26.11.1986, & JP61266305 A 19870424 | [AD] - PATENT ABSTRACTS OF JAPAN vol. 10, no. 36 (C.328)(2093), 13 February 1986; & JP - A - 60186406 (SHINETSU_KAGAKU KOGYO K.K.) 21.09.1985, & JP60186406 A 19860213 |