US4892681A
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Non-linear optical article
Assignee: NOF Corp
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Filing: 1987-09-29
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Granted: 1990-01-09
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Expires: 2007-09-29
Abstract
Abstract A non-linear optical article is constituted of a derivative of benzalacetophenone represented by the following general formula: ##STR1## wherein A and B each represent the same or different atom or group and stand for a hydrogen atom, an alkoxy group having 1 to 4 carbon atoms, a chlorine atom, a bromine atom, an amino group or a dialkylamino group having 1 to 2 carbon atoms.
Inventors
- 👤 Seizo Miyata
- 👤 Toshiyuki Watanabe
- 👤 Yoshitaka Goto
- 👤 Masaharu Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3611; C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C49/00; C07C49/76; C07C49/794; C07C49/796; C07C49/80; C07C49/813; C07C49/84
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
In a non-linear optical device in which an organic compound is disposed in a light beam, the improvement in which the organic compound is a derivative of benzalacetophenone selected from the group represented by the following general formula ##STR17## wherein A is CH 3 O-- in case of B being --NH 2 , --Br or --H; A is (CH 3 ) 2 N--, Br-- or C 2 H 5 O-- in case of B being --OCH 3 ; and A is Br-- in case of B being --H.
Claim 2
Dependent Claim
88 words
In a non-linear optical device in which an organic compound is disposed in a light beam, the improvement in which the organic compound is a derivative of benzalacetophenone selected from the group represented by the following general formula ##STR17## wherein A is CH 3 O-- in case of B being --NH 2 , --Br or --H; A is (CH 3 ) 2 N--, Br-- or C 2 H 5 O-- in case of B being --OCH 3 ; and A is Br-- in case of B being --H.
Claim 3
Dependent Claim
33 words
The non-linear optical device according to claim 1, wherein said derivative of benzalacetophenone has a percent transmission of 100% to the visible light rays having the wavelengths of not less than 400 nm.
References Cited (Backward Citations)
DE2802440A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |