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Patent US4952667A successfully refreshed from Google Patents.
US4952667A
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Novel copolymers and electroactive polymers derived from same
Assignee: Eneos Corp
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Filing: 1988-06-08
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Granted: 1990-08-28
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Expires: 2008-06-08
Abstract
Abstract Provided is a copolymer having a repeating unit represented by the general formula ##STR1## wherein Ar represents ##STR2## wherein R 1 represents hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, R 2 represents hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl, n is 1 or more and an electroactive polymer obtained by doping the above copolymer.
Inventors
- 👤 Yutaka Shikatani
- 👤 Hobuyuki Kuroda
- 👤 Naoki Kataoka
- 👤 Yoshiyuki Shimo
- 👤 Kazuo Matsuura
- 👤 Etsuo Kawamata
- 👤 Hiroshi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:45
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; C; C08; C08G; C08G61/00; C08G61/12; C08G73/00; C08G73/02; C08G73/026; C08G73/0273; C08G73/06; C08G73/0666; C08G73/0672; H01B1/128
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A copolymer represented by the general formula ##STR8## wherein Ar is ##STR9## R 1 is hydrogen or a hydrocarbon group having 1 to 20 carbon atoms; R 2 is hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n is an integer not less than 2 when Ar is (a) or (b), or n is an integer not less than 1 when Ar is (c); and x is an integer not less than 2.
Claim 2
Dependent Claim
81 words
A copolymer represented by the general formula ##STR8## wherein Ar is ##STR9## R 1 is hydrogen or a hydrocarbon group having 1 to 20 carbon atoms; R 2 is hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, furyl, pyridyl, chlorophenyl, nitrophenyl or methoxyphenyl; n is an integer not less than 2 when Ar is (a) or (b), or n is an integer not less than 1 when Ar is (c); and x is an integer not less than 2.
Claim 3
Dependent Claim
32 words
A copolymer as set forth in claim 1, wherein n is an integer in the range of 1 to 50 and x is an integer in the range of 2 to 1,000.
Claim 4
Dependent Claim
15 words
An electroactive polymer obtained by doping the copolymer of claim 1 with an electron acceptor.
References Cited (Backward Citations)
US4025341A
Cited
US4548738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |