Patent US5654367A successfully refreshed from Google Patents.
US5654367A
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Organic polymer and preparation and use thereof
Assignee: Panasonic Holdings Corp
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Filing: 1995-05-26
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Granted: 1997-08-05
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Expires: 2015-05-26
Abstract
Abstract An alternating copolymer comprising a repeating unit of the formula: --Z--(X--Y).sub.n -- (I) wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
Inventors
- 👤 Akio Takimoto
- 👤 Hirofumi Wakemoto
- 👤 Eiichiro Tanaka
- 👤 Masanori Watanabe
- 👤 Junko Asayama
- 👤 Hisahito Ogawa
- 👤 Shigehiro Sato
- 👤 Fumiko Yokotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:50
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G69/00; C08G69/02; C08G69/26; C08G69/32; C08G69/40; C08G69/42; C08G69/44; C08G73/1046; C08G73/105; C08G73/1057; C08G73/1064; C08G73/1067; C08G73/14; C08G73/16; C09; C09B; C09B69/00; C09B69/10; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133711; G02F1/135; G02F1/1354; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; G03G5/076; G03G5/0763; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K2019/328; C09K2323/00; C09K2323/02; C09K2323/027; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
An alternating copolymer comprising a repeating unit of the formula: --Z--(X--Y).sub.n -- (I) wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, which alternating copolymer is at least one member selected from the group consisting of a polyimide and a polyamide imide.
Claim 2
Dependent Claim
58 words
An alternating copolymer comprising a repeating unit of the formula: --Z--(X--Y).sub.n -- (I) wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, which alternating copolymer is at least one member selected from the group consisting of a polyimide and a polyamide imide.
Claim 3
Dependent Claim
23 words
The alternating copolymer according to claim 1, which has a functional group which generates an optical carrier, and is in a crystalline state.
Claim 4
Dependent Claim
19 words
The alternating copolymer according to claim 1, which has at least one diffraction peak in an X-ray diffraction pattern.
Claim 5
Dependent Claim
13 words
The alternating copolymer according to claim 1, which has been crystallized By heating.
Claim 6
Dependent Claim
21 words
The alternating copolymer according to claim 1, which has been crystallized by heating with raising a temperature as the crystallization proceeds.
References Cited (Backward Citations)
FR2400224A1
Cited
US4698295A
Cited
EP0240249A2
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EP0283636A2
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EP0300326A1
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EP0375165A2
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US5034296A
Cited
US5030533A
Cited
US5155200A
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US5316880A
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US5384649A
Cited
US5380807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-04 | 2001-02-03 | 2001-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-04 | 2005-02-03 | 2005-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-04 | 2009-02-03 | 2009-08-05 | $7700.00 | Window Closed / Lapsed |