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EP0021754
European procedure
Extract from the Register of European Patents
EP About this file: EP0021754
| EP0021754 - Electro-optic modulator and use of the same [Right-click to bookmark this link] | |||
| Former [1981/01] | Electro-optic modulator and system including same | ||
| [1983/13] | Status | No opposition filed within time limit Status updated on 14.09.2016 Database last updated on 02.09.2024 | Most recent event Tooltip | 14.09.2016 | No opposition filed within time limit | Applicant(s) | For all designated states Xerox Corporation Xerox Square - 020 Rochester New York 14644 / US | [N/P] |
| Former [1981/01] | For all designated states XEROX CORPORATION Xerox Square - 020 Rochester New York 14644 / US | Inventor(s) | 01 /
Sprague, Robert A. 13755 Calle Tacuba Saratoga California / US | 02 /
Johnson, Richard V. 1245 East Orange Grove Boulevard Pasadena California / US | [1981/01] | Representative(s) | Weatherald, Keith Baynes, et al Rank Xerox Limited Patent Department 364 Euston Road London NW1 3BL / GB | [1983/52] |
| Former [1981/01] | Weatherald, Keith Baynes Rank Xerox Ltd Patent Department Parkway Marlow Buckinghamshire SL7 1YL / GB | Application number, filing date | 80302005.6 | 16.06.1980 | [1981/01] | Priority number, date | US19790040607 | 21.06.1979 Original published format: US 40607 | [1981/01] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0021754 | Date: | 07.01.1981 | Language: | EN | [1981/01] | Type: | B1 Patent specification | No.: | EP0021754 | Date: | 30.03.1983 | Language: | EN | [1983/13] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 15.08.1980 | Classification | IPC: | G02F1/03, G11B7/00 | [1981/01] | CPC: |
G02F1/315 (EP,US);
B41J2/445 (EP,US);
B41J2/465 (EP,US);
H04N1/036 (EP,US);
H04N5/18 (EP,US)
| Designated contracting states | DE, FR, GB, NL [1981/01] | Title | German: | Elektrooptischer Modulator und seine Verwendung | [1983/13] | English: | Electro-optic modulator and use of the same | [1983/13] | French: | Modulateur électrooptique et son emploi | [1983/13] |
| Former [1981/01] | Elektrooptischer Modulator und System mit einem solchen Modulator | ||
| Former [1981/01] | Electro-optic modulator and system including same | ||
| Former [1981/01] | Modulateur électrooptique et système comportant un tel modulateur | Examination procedure | 09.05.1981 | Examination requested [1981/30] | 29.01.1982 | Despatch of a communication from the examining division (Time limit: M04) | 02.04.1982 | Reply to a communication from the examining division | 18.08.1982 | Despatch of communication of intention to grant (Approval: ) | 24.09.1982 | Communication of intention to grant the patent | 06.12.1982 | Fee for grant paid | 06.12.1982 | Fee for publishing/printing paid | Opposition(s) | 31.12.1983 | No opposition filed within time limit [ N /P ] | Fees paid | Renewal fee | 29.03.1982 | 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 | DE2113373 [ ]; | US3862357 [ ] (KANAZAWA YASUNORI, et al); | US3887885 [ ] (HATTORI SHUZO, et al); | US3958862 [ ] (SCIBOR-RYLSKI MAREK TADEUSZ VI); | DE2706828 [ ] (MATSUSHITA ELECTRIC IND CO LTD); | US4125842 [ ] (OHNISHI MASAHIRO, et al); | US4125318 [ ] (SCIBOR-RYLSKI MAREK T) |