US4617142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclohexanecarbonylic acid ethyl ester derivatives
Assignee: JNC Corp
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Filing: 1985-03-28
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Granted: 1986-10-14
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Expires: 2005-03-28
Abstract
Abstract A liquid crystal compound having a positive value of dielectric anisotropy and a low viscosity and being capable of extending the mesomorphic range of liquid crystal composition toward its lower region, and a liquid crystal composition containing the same are provided, which compound is a trans-4-substituted-cyclohexanecarboxylic acid β-(4-halogenophenyl) ethyl ester derivative expressed by the general formula ##STR1## wherein R 1 represents R 2 , ##STR2## wherein R 2 represents an alkyl group or an alkoxy group, each having 1 to 15 carbons and X represents F or Cl.
Inventors
- 👤 Shigeru Sugimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:12
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
44 words
A trans-4-substituted-cyclohexanecarboxylic acid β-(4-halogenophenyl) ethyl ester derivative expressed by the general formula ##STR17## wherein R 1 represents R 2 , ##STR18## wherein R 2 represents an alkyl group or an alkoxy group, each having 1 to 15 carbons and X represents F or Cl.
Claim 2
Dependent Claim
44 words
A trans-4-substituted-cyclohexanecarboxylic acid β-(4-halogenophenyl) ethyl ester derivative expressed by the general formula ##STR17## wherein R 1 represents R 2 , ##STR18## wherein R 2 represents an alkyl group or an alkoxy group, each having 1 to 15 carbons and X represents F or Cl.
Claim 3
Dependent Claim
23 words
A liquid crystal compositon comprising a mixture of compounds at least one of which is a compound as set forth in claim 1.
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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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |