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EP0239635
European procedure
Extract from the Register of European Patents
EP About this file: EP0239635
| EP0239635 - NONLINEAR AND BISTABLE OPTICAL DEVICE [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 12.11.1992 Database last updated on 30.10.2024 | Most recent event Tooltip | 12.11.1992 | No opposition filed within time limit | published on 30.12.1992 [1992/53] | Applicant(s) | For all designated states AT&T Corp. 32 Avenue of the Americas New York, NY 10013-2412 / US | [1987/41] | Inventor(s) | 01 /
MILLER, David, Andrew, Barclay 64 Hance Road Fairhaven, NJ 07701 / US | [1987/41] | Representative(s) | Watts, Christopher Malcolm Kelway, et al Lucent Technologies (UK) Ltd, 5 Mornington Road Woodford Green Essex IG8 OTU / GB | [N/P] |
| Former [1991/03] | Watts, Christopher Malcolm Kelway, Dr., et al AT&T (UK) LTD. AT&T Intellectual Property Division 5 Mornington Road Woodford Green Essex IG8 OTU / GB | ||
| Former [1987/41] | Watts, Christopher Malcolm Kelway, Dr. AT&T (UK) Ltd. 5, Mornington Road Woodford Green Essex, IG8 0TU / GB | Application number, filing date | 86906563.1 | 03.10.1986 | [1987/41] | WO1986US02107 | Priority number, date | US19850785546 | 08.10.1985 Original published format: US 785546 | [1987/41] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | WO8702478 | Date: | 23.04.1987 | Language: | EN | [1987/09] | Type: | A1 Application with search report | No.: | EP0239635 | Date: | 07.10.1987 | Language: | EN | The application published by WIPO in one of the EPO official languages on 23.04.1987 takes the place of the publication of the European patent application. | [1987/41] | Type: | B1 Patent specification | No.: | EP0239635 | Date: | 08.01.1992 | Language: | EN | [1992/02] | Search report(s) | International search report - published on: | EP | 23.04.1987 | Classification | IPC: | G02F1/17, G02F1/015, G02F1/35, G02F3/00, H01L31/02 | [1987/41] | CPC: |
B82Y20/00 (EP);
G02F1/17 (KR);
G02F1/017 (EP);
G02F1/01716 (EP);
G02F3/028 (EP);
H01L31/101 (EP);
H01L31/1016 (EP)
(-)
| Designated contracting states | DE, FR, GB, IT, NL, SE [1987/41] | Title | German: | NICHTLINEARES UND BISTABILES OPTISCHES BAUELEMENT | [1987/41] | English: | NONLINEAR AND BISTABLE OPTICAL DEVICE | [1987/41] | French: | DISPOSITIF OPTIQUE NON LINEAIRE ET BISTABLE | [1987/41] | Entry into regional phase | 01.06.1987 | National basic fee paid | 01.06.1987 | Designation fee(s) paid | 24.09.1987 | Examination fee paid | Examination procedure | 24.09.1987 | Examination requested [1987/48] | 06.06.1990 | Despatch of a communication from the examining division (Time limit: M06) | 07.11.1990 | Reply to a communication from the examining division | 03.04.1991 | Despatch of communication of intention to grant (Approval: Yes) | 17.05.1991 | Communication of intention to grant the patent | 05.08.1991 | Fee for grant paid | 05.08.1991 | Fee for publishing/printing paid | Opposition(s) | 09.10.1992 | No opposition filed within time limit [1992/53] | Fees paid | Renewal fee | 13.10.1988 | Renewal fee patent year 03 | 19.10.1989 | Renewal fee patent year 04 | 19.10.1990 | Renewal fee patent year 05 | 21.10.1991 | Renewal fee patent year 06 |
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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. | Cited in | International search | EP0155802 [ ] (AMERICAN TELEPHONE & TELEGRAPH [US]); | WO8403397 [ ] (AMERICAN TELEPHONE & TELEGRAPH [US]) | [A] - Optical Engineering, Vol. 24, No. 4, July/August 1985 (Bellingham, Washington, US) D.S. CHEMLA et al.: "Non Linear Optical Properties of GaAs/GaA1As Multiple Quantum Well Material: Phenomena and Applications", see page 556, Abstract and paragraph 3, page 557 - formula (2), page 558; figures 13 and 15 |