US4758381A
Expired / Lapsed
US
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7,7,8,8-tetracyanoquinodimethane and method for preparing the same
Assignee: Panasonic Holdings Corp
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Filing: 1986-02-24
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Granted: 1988-07-19
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Expires: 2006-02-24
Abstract
Abstract A novel organic compound, 7,7,8,8-tetracyanoquinodimethane having a higher alkyl group containing at least ten carbon atoms, may be formed in a monomolecular layer or film by Langmuir-Blodgett's technique.
Inventors
- 👤 Sadaharu Suga
- 👤 Ayashi Noguchi
- 👤 Shigeo Yasui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:33
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
18 words
A 7,7,8,8-tetracyanoquinodimethane compound represented by the following formula ##STR7## in which R represents alkyl of 10-22 carbon atoms.
Claim 2
Dependent Claim
18 words
A 7,7,8,8-tetracyanoquinodimethane compound represented by the following formula ##STR7## in which R represents alkyl of 10-22 carbon atoms.
Claim 3
Dependent Claim
45 words
An organic charge transfer complex comprising: an electron acceptor of a 7,7,8,8-tetracyanoquinodimethane compound represented by the following formula ##STR8## in which R represents alkyl of 10-22 carbon atoms, and an electron donor selected from the group consisting of tetrathiofulvalene, heterocyclic quaternary ammonium salt, and cyanine-dye.
Claim 4
Dependent Claim
45 words
An organic charge transfer complex comprising: an electron acceptor of a 7,7,8,8-tetracyanoquinodimethane compound represented by the following formula ##STR8## in which R represents alkyl of 10-22 carbon atoms, and an electron donor selected from the group consisting of tetrathiofulvalene, heterocyclic quaternary ammonium salt, and cyanine-dye.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |