US4820443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclohexane derivative and liquid crystal composition containing the same
Assignee: JNC Corp
•
Filing: 1988-02-01
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Granted: 1989-04-11
•
Expires: 2008-02-01
Abstract
Abstract A cyclohexane derivative having a low viscosity, a broad nematic phase temperature range, a good compatibility with other liquid crystal components even at low temperatures and a large positive dielectric anisotropy value, and a liquid crystal composition containing the cyclohexane derivative are provided, which cyclohexane derivative is expressed by the formula ##STR1## wherein R represents an alkyl group of 1-10 C and A represents a hydrogen atom, a halogen atom of F, Cl or Br or a cyano group.
Inventors
- 👤 Yasuyuki Goto
- 👤 Tetsuya Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:26
CPC Classifications
C; C07; C07C; C07C255/00; C07C25/00; C07C25/18; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A cyclohexane derivative expressed by the formula ##STR15## wherein R represents an alkyl group of 1 to 10 carbon atoms and A represents a hydrogen atom, a halogen atom of F, Cl or Br or a cyano group.
Claim 2
Dependent Claim
38 words
A cyclohexane derivative expressed by the formula ##STR15## wherein R represents an alkyl group of 1 to 10 carbon atoms and A represents a hydrogen atom, a halogen atom of F, Cl or Br or a cyano group.
Claim 3
Dependent Claim
24 words
A cyclohexane derivative according to claim 1, expressed by the formula ##STR16## wherein R represents an alkyl group of 1 to 10 carbon atoms.
Claim 4
Dependent Claim
24 words
A cyclohexane derivative according to claim 1, expressed by the formula ##STR17## wherein R represents an alkyl group of 1 to 10 carbon atoms.
Claim 5
Dependent Claim
24 words
A cyclohexane derivative according to claim 1, expressed by the formula ##STR18## wherein R represents an alkyl group of 1 to 10 carbon atoms.
Claim 6
Dependent Claim
53 words
A liquid crystal composition comprising at least two components at least one of which is a cyclohexane derivative expressed by the formula ##STR19## wherein R represents an alkyl group of 1 to 10 carbon atoms and A represents a hydrogen atom, a halogen atom of F, Cl or Br or a cyano group.
Claim 7
Dependent Claim
53 words
A liquid crystal composition comprising at least two components at least one of which is a cyclohexane derivative expressed by the formula ##STR19## wherein R represents an alkyl group of 1 to 10 carbon atoms and A represents a hydrogen atom, a halogen atom of F, Cl or Br or a cyano group.
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |