US4908152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclohexane derivative
Assignee: JNC Corp
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Filing: 1989-03-31
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Granted: 1990-03-13
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Expires: 2009-03-31
Abstract
Abstract A novel liquid crystal compound useful as a component of liquid crystal compositions, and particularly suitable to improvement in low temperature characteristics, and a liquid crystal composition containing the compound are provided, which compound is a 2-alkyl-5-[trans-4-(trans-4-alkylcyclohexyl)cyclohexyl]fluorobenzene expressed by the formula ##STR1## wherein R 1 and R 2 each represent an alkyl group of 2 to 10 carbon atoms.
Inventors
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/18; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A liquid crystal compound having a low-temperature compatibility with other liquid crystal compounds, which compound is a 2-alkyl-5-[trans-4-(trans-4-alkylcyclohexyl) cyclohexyl]fluorobenzene expressed by the formula ##STR5## wherein R 1 represents an alkyl group of 2 to 10 carbon atoms and R 2 represents an alkyl group of 2 to 10 carbon atoms.
Claim 2
Dependent Claim
50 words
A liquid crystal compound having a low-temperature compatibility with other liquid crystal compounds, which compound is a 2-alkyl-5-[trans-4-(trans-4-alkylcyclohexyl) cyclohexyl]fluorobenzene expressed by the formula ##STR5## wherein R 1 represents an alkyl group of 2 to 10 carbon atoms and R 2 represents an alkyl group of 2 to 10 carbon atoms.
Claim 3
Dependent Claim
26 words
A liquid crystal compound according to claim 1, wherein said R 1 and R 2 each represent an alkyl group of 2 or 3 carbon atoms.
Claim 4
Dependent Claim
11 words
A liquid crystal compound according to claim 1, which is 2-ethyl-5-[trans-4-(trans-4-propylcyclohexyl)cyclohexyl]fluorobenzene.
Claim 5
Dependent Claim
11 words
A liquid crystal compound according to claim 1, which is 2-ethyl-5-[trans-4-(trans-4-ethylcyclohexyl)cyclohexyl]fluorobenzene.
Claim 6
Dependent Claim
11 words
A liquid crystal compound according to claim 1, which is 2-propyl-5-[trans-4-(trans-4-propylcyclohexyl)cyclohexyl]fluorobenzene.
Claim 7
Dependent Claim
27 words
A liquid crystal composition comprising at least two components at least one of which is a compound of the formula (a) as set forth in claim 1.
Claim 8
Dependent Claim
29 words
A liquid crystal composition according to claim 6, which is a mixture of at least one compound of the formula (a) with at least one nematic liquid crystal compound.
Claim 9
Dependent Claim
32 words
A liquid crystal composition according to claim 6, which is a mixture of at least one compound of the formula (a) with a liquid crystal composition consisting of trans-4-propyl-(4-cyanophenyl)cyclohexane, trans-4-pentyl-(4-cycnophenyl)cyclohexane and trans-4-heptyl-(4-cyanophenyl)cyclohexane.
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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) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |