US4737557A
Expired / Lapsed
US
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3-N-higher alkylthiophene polymer and composition thereof
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1987-03-20
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Granted: 1988-04-12
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Expires: 2007-03-20
Abstract
Abstract A 3-n-alkylthiophene polymer of the general formula: ##STR1## (wherein n stands for an integer in the range of 5 to 11 and m for an integer in the range of 80 to 350) and a composition containing this polymer.
Inventors
- 👤 Masaaki Sato
- 👤 Susumu Tanaka
- 👤 Kyoji Kaeriyama
- 👤 Yoshio Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A 3-n-alkylthiophene polymer represented by the formula: ##STR4## wherein n stands for an integer in the range of 5 to 11 and m for an integer in the range of 80 to 350.
Claim 2
Dependent Claim
33 words
A 3-n-alkylthiophene polymer represented by the formula: ##STR4## wherein n stands for an integer in the range of 5 to 11 and m for an integer in the range of 80 to 350.
Claim 3
Dependent Claim
61 words
A 3-n-alkylthiophene polymer composition consisting of a 3-n-alkylthiophene polymer of the formula: ##STR5## wherein n stands for an integer in the range of 5 to 11 and m for an integer in the range of 80 to 350 doped with at least one anion selected from the group consisting of hexafluorophosphate ion, hexafluoroarsenate ion, tetrafluoroborate ion, perchlorate ion, and trifluoromethanesulfonate ion.
Claim 4
Dependent Claim
61 words
A 3-n-alkylthiophene polymer composition consisting of a 3-n-alkylthiophene polymer of the formula: ##STR5## wherein n stands for an integer in the range of 5 to 11 and m for an integer in the range of 80 to 350 doped with at least one anion selected from the group consisting of hexafluorophosphate ion, hexafluoroarsenate ion, tetrafluoroborate ion, perchlorate ion, and trifluoromethanesulfonate ion.
Claim 5
Dependent Claim
23 words
The 3-n-alkylthiophene polymer composition of claim 2, wherein the content of said anion is in the range of 1 to 30% by weight.
References Cited (Backward Citations)
US4521589A
Cited
US4691005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |