Patent US4773743A successfully refreshed from Google Patents.
US4773743A
Expired / Lapsed
US
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Electrooptic light modulator device
Assignee: CNA Holdings LLC
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Filing: 1987-02-12
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Granted: 1988-09-27
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Expires: 2007-02-12
Abstract
Abstract This invention provides an electrooptic light modulator device with a nonlinear optical component consisting of a transparent solid medium of a naphthoquinodimethane compound such as 11,11-di(n-hexyldecylamino)-12,12-dicyano-2,6-naphthoquinodimethane: ##STR1##
Inventors
- 👤 Eui W. Choe
- 👤 Alan Buckley
- 👤 Anthony F. Garito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:04
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08K; C08K5/00; C08K5/16; C08K5/315; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611; C07C2603/00; C07C2603/02; C07C2603/40; C07C2603/42; C07C2603/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
An electrooptic light modulator device with a nonlinear optical component comprising a transparent solid medium of a naphthoquinone composition corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and alkyl groups containing between about 1-20 carbon atoms.
Claim 2
Dependent Claim
41 words
An electrooptic light modulator device with a nonlinear optical component comprising a transparent solid medium of a naphthoquinone composition corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and alkyl groups containing between about 1-20 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |