US4387038A
Expired / Lapsed
US
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4-(Trans-4'-alkylcyclohexyl) benzoic acid 4'"-cyano-4"-biphenylyl esters
Assignee: JNC Corp
•
Filing: 1981-06-26
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Granted: 1983-06-07
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Expires: 2001-06-26
Abstract
Abstract Novel compounds, 4-(trans-4'-alkylcyclohexyl)benzoic acid 4"'-cyano-4"-biphenylyl esters expressed by the general formula ##STR1## wherein R represents an alkyl group having 1 to 10 carbon atoms, and liquid crystal compositions comprising at least one of the esters are provided. Liquid crystal compositions containing the compounds have practical superior characteristic properties and also good stability.
Inventors
- 👤 Masahiro Fukui
- 👤 Hiromichi Inoue
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068; C09K19/42; C09K19/44
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
22 words
A 4-(trans-4'-alkylcyclohexyl)benzoic acid 4"'-cyano-4"-biphenylyl ester expressed by the formula ##STR18## wherein R represents an alkyl group having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
22 words
A 4-(trans-4'-alkylcyclohexyl)benzoic acid 4"'-cyano-4"-biphenylyl ester expressed by the formula ##STR18## wherein R represents an alkyl group having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
18 words
An ester according to claim 1 wherein R is an alkyl group having 2 to 7 carbon atoms.
Claim 4
Dependent Claim
14 words
An ester according to claim 1 wherein R is C 5 H 11 .
Claim 5
Dependent Claim
14 words
An ester according to claim 1 wherein R is C 7 H 15 .
Claim 6
Dependent Claim
37 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a 4-(trans-4'-alkylcyclohexyl)benzoic acid 4"'-cyano-4"-biphenylyl ester expressed by the formula ##STR19## wherein R represents an alkyl group having 1 to 10 carbon atoms.
Claim 7
Dependent Claim
37 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a 4-(trans-4'-alkylcyclohexyl)benzoic acid 4"'-cyano-4"-biphenylyl ester expressed by the formula ##STR19## wherein R represents an alkyl group having 1 to 10 carbon atoms.
Claim 8
Dependent Claim
15 words
A liquid crystal composition according to claim 5, containing at least one 4-alkyl-4' cyanobiphenyl compound.
Claim 9
Dependent Claim
14 words
A liquid crystal composition according to claim 5, containing at least one 4-alkoxy-4'-cyanobiphenyl compound.
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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) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |