US4534883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Unsubstituted or substituted-4 cyanotercyclohexane derivatives
Assignee: JNC Corp
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Filing: 1984-02-29
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Granted: 1985-08-13
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Expires: 2004-02-29
Abstract
Abstract A liquid crystal substance having a high nematic-clearing point and a broad nematic temperature range and yet a low viscosity, and a composition containing the same, are provided, which substance is 4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexanes expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Inventors
- 👤 Shigeru Sugimori
- 👤 Tetsuhiko Kojima
- 👤 Toyoshiro Isoyama
- 👤 Kazunori Nigorikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:32
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexanes having the general formula ##STR5## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Claim 2
Dependent Claim
23 words
4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexanes having the general formula ##STR5## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Claim 3
Dependent Claim
38 words
A liquid crystal composition comprising a mixture of compounds, at least one of which is a 4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexane having the formula ##STR6## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Claim 4
Dependent Claim
38 words
A liquid crystal composition comprising a mixture of compounds, at least one of which is a 4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexane having the formula ##STR6## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Claim 5
Dependent Claim
29 words
A liquid crystal display cell containing a liquid crystal composition comprising a mixture of compounds, at least one of which is a compound as set forth in claim 1.
Claim 6
Dependent Claim
12 words
A compound according to claim 1 wherein the alkyl group is propyl.
Claim 7
Dependent Claim
12 words
A composition according to claim 2 wherein said alkyl group is propyl.
Claim 8
Dependent Claim
14 words
A cell according to claim 5 wherein said at least one compound is 4-propyl-4"-cyano-trans,trans,trans-tercyclohexane.
References Cited (Backward Citations)
US4154697A
Cited
US4181625A
Cited
US4229315A
Cited
US4273929A
Cited
US4330426A
Cited
US4331552A
Cited
US4323504A
Cited
US4405488A
Cited
GB2092169A
Cited
US4432885A
Cited
US4419263A
Cited
US4422951A
Cited
US4439340A
Cited
JPS5899456A
Cited
US4434073A
Cited
GB2111992A
Cited
EP0084974A1
Cited
US4477369A
Cited
DE3211601A1
Cited
EP0090671A1
Cited
US4472293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |