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EP0283227
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EP About this file: EP0283227
| EP0283227 - Optical isolator [Right-click to bookmark this link] | Status | The application is deemed to be withdrawn Status updated on 10.06.1991 Database last updated on 17.08.2024 | Most recent event Tooltip | 10.06.1991 | Application deemed to be withdrawn | published on 31.07.1991 [1991/31] | Applicant(s) | For all designated states Seiko Instruments Inc. 31-1, Kameido 6-chome Koto-ku Tokyo 136 / JP | [N/P] |
| Former [1988/38] | For all designated states SEIKO INSTRUMENTS INC. 31-1, Kameido 6-chome Koto-ku Tokyo 136 / JP | Inventor(s) | 01 /
Takemura, Yasuhiro 31-1, Kameido 6-chome Koto-ku Tokyo / JP | 02 /
Takesue, Toshiharu 31-1, Kameido 6-chome Koto-ku Tokyo / JP | [1988/38] | Representative(s) | Miller, Joseph, et al J. MILLER & CO. 34 Bedford Row, Holborn London WC1R 4JH / GB | [1988/38] | Application number, filing date | 88302197.4 | 14.03.1988 | [1988/38] | Priority number, date | JP19870061939 | 17.03.1987 Original published format: JP 6193987 | [1988/38] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0283227 | Date: | 21.09.1988 | Language: | EN | [1988/38] | Type: | A3 Search report | No.: | EP0283227 | Date: | 06.06.1990 | Language: | EN | [1990/23] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 17.04.1990 | Classification | IPC: | G02B6/42, G02B6/10 | [1990/23] | CPC: |
G02B6/00 (KR);
G02B6/2821 (EP);
G02B6/4208 (EP)
|
| Former IPC [1988/38] | G02B6/10 | Designated contracting states | DE, FR, GB [1988/38] | Title | German: | Optischer Isolator | [1988/38] | English: | Optical isolator | [1988/38] | French: | Composant optique non réciproque | [1988/38] | File destroyed: | 08.03.1999 | Examination procedure | 07.12.1990 | Application deemed to be withdrawn, date of legal effect [1991/31] | 01.03.1991 | Despatch of communication that the application is deemed to be withdrawn, reason: examination fee not paid in time [1991/31] | Fees paid | Renewal fee | 28.02.1990 | Renewal fee patent year 03 | Penalty fee | Penalty fee Rule 85b EPC 1973 | 04.01.1991 | M01 Not yet paid |
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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] - ELECTRONICS LETTERS, vol. 21, no. 6, 14th March 1985pages 249-251; M.S. YATAKI et al.: "All-fibre polarising beamsplitter" | [AD] - PROCEEDINGS OF INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, Tokyo, 1986, page 21; Y. NAMIHIRA et al.: "Fused-taper-twisted single-mode fiber couplers as a quarter-wave device"pages 351-354 |