US4596667A
Expired / Lapsed
US
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Liquid crystalline compounds and mixtures thereof
Assignee: JNC Corp
•
Filing: 1984-01-04
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Granted: 1986-06-24
•
Expires: 2004-01-04
Abstract
Abstract Novel ferroelectric liquid crystalline compounds having a superior stability and chiral, smectic liquid crystalline compositions containing at least one kind of the same are provided, which compounds are expressed by the general formula ##STR1## wherein ##STR2## represents 1,4-phenylene group ##STR3## or 1,4-trans-cyclohexane group ##STR4## R*, an optically active alkyl group; m=o, 1 or 2; n=1 or 2; X, a linear chain or branched alkyl group or alkoxy group, each having 1 to 18 carbon atoms; and when ##STR5## represents ##STR6## m=1; and n=1, X represents a linear chain or branched alkyl group having 1 to 18 carbon atoms or a linear chain alkoxy group having 11 to 18 carbon atoms.
Inventors
- 👤 Takashi Inukai
- 👤 Kenji Furukawa
- 👤 Kanetsugu Terashima
- 👤 Shinichi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
An optically active smectic liquid crystal compound expressed by the formula ##STR53## wherein m is 1, n is 2, X represents an alkyl or alkoxy group, and R* is an optically active group selected from the group consisting of 2-methylbutyl and 2-octyl.
Claim 2
Dependent Claim
42 words
An optically active smectic liquid crystal compound expressed by the formula ##STR53## wherein m is 1, n is 2, X represents an alkyl or alkoxy group, and R* is an optically active group selected from the group consisting of 2-methylbutyl and 2-octyl.
Claim 3
Dependent Claim
24 words
A chiral, smectic liquid crystalline composition consisting of at least two components and containing at least one compound as set forth in claim 1.
Claim 4
Dependent Claim
21 words
A chiral, smectic liquid crystalline composition consisting only of a plurality of compounds having the formula 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) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |