Patent US4654162A successfully refreshed from Google Patents.
US4654162A
Expired / Lapsed
US
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Alcohol derivatives
Assignee: JNC Corp
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Filing: 1985-08-12
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Granted: 1987-03-31
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Expires: 2005-08-12
Abstract
Abstract A novel compound usable as a component constituting liquid crystal materials having a positive dielectric anisotropy value and a liquid crystal composition containing the same are provided, which compound is an alcohol derivative expressed by the general formula ##STR1## wherein R 1 represents a hydroxyalkyl group of 1 to 10 carbon atoms having hydroxyl group at the end or an intermediate position thereof; R 2 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms or --C.tbd.N; and ##STR2## represents ##STR3## and when R 2 represents --C.tbd.N, ##STR4## represents ##STR5##
Inventors
- 👤 Shigeru Sugimori
- 👤 Yasuyuki Goto
- 👤 Toyoshiro Isoyama
- 👤 Kazunori Nigorikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:33
CPC Classifications
C; C07; C07C; C07C255/00; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/52; C09K19/54
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
45 words
A 1-hydroxyalkoxy-4-(trans-4-alkylcyclohexyl)benzene compound of the formula ##STR21## wherein R 1 represents a hydroxyalkyl group of 1 to 10 carbon atoms having a hydroxyl group at the end or an intermediate position thereof and R 2 represents an alkyl group of 1 to 10 carbon atoms.
Claim 2
Dependent Claim
45 words
A 1-hydroxyalkoxy-4-(trans-4-alkylcyclohexyl)benzene compound of the formula ##STR21## wherein R 1 represents a hydroxyalkyl group of 1 to 10 carbon atoms having a hydroxyl group at the end or an intermediate position thereof and R 2 represents an alkyl group of 1 to 10 carbon atoms.
Claim 3
Dependent Claim
22 words
A liquid crystal composition having at least two components at least one of which is a compound as defined 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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |