US4824219A
Expired / Lapsed
US
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Hydrazide-containing thermoplastic polymers exhibiting nonlinear optical response
Assignee: CNA Holdings LLC
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Filing: 1988-06-22
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Granted: 1989-04-25
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Expires: 2008-06-22
Abstract
Abstract In one embodiment this invention provides a nonlinear optical medium which is a transparent film of a thermoplastic polymer composed of recurring monomeric units corresponding to the formula: ##STR1##
Inventors
- 👤 Eui W. Choe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A transparent nonlinear optical medium comprising a thermoplastic polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR11## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; and m is an integer of at least 3.
Claim 2
Dependent Claim
46 words
A transparent nonlinear optical medium comprising a thermoplastic polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR11## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; and m is an integer of at least 3.
Claim 3
Dependent Claim
17 words
A nonlinear optical medium in accordance with claim 1 which is in the form of a film.
Claim 4
Dependent Claim
22 words
A nonlinear optical medium in accordance with claim 1 which is in the form of a coating on a transparent optical substrate.
Claim 5
Dependent Claim
18 words
A nonlinear optical medium in accordance with claim 1 wherein the medium has an external field-induced molecular orientation.
Claim 6
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 1 wherein the medium is noncentrosymmetric and exhibits second order nonlinear optical response.
Claim 7
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 1 wherein the medium is centrosymmetric and exhibits third order nonlinear optical response.
Claim 8
Dependent Claim
58 words
A light switch or light modulator device with a polymeric nonlinear optical component comprising a transparent solid medium of a polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; and m is an integer of at least 3.
Claim 9
Dependent Claim
58 words
A light switch or light modulator device with a polymeric nonlinear optical component comprising a transparent solid medium of a polymer which is characterized by a recurring monomeric unit corresponding to the formula: ##STR12## where R is a substituent selected from hydrogen and C 1 -C 4 alkyl groups; and m is an integer of at least 3.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |