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US4592858A
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Smectic liquid crystal compound and liquid crystal compositions
Assignee: Ajinomoto Co Inc
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Filing: 1985-04-12
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Granted: 1986-06-03
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Expires: 2005-04-12
Abstract
Abstract A liquid crystal compound of the formula: ##STR1## wherein R 1 is an alkyl group, X is chloro or bromo, and R 2 is a branched-alkyl group; and the carbon atom marked with an * is an asymmetric carbon atom.
Inventors
- 👤 Ryoichi Higuchi
- 👤 Masao Honma
- 👤 Takao Sakurai
- 👤 Naoko Mikami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:04
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/126; C09K19/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
A liquid crystal compound of the formula: ##STR31## R 1 is an alkyl group, X is halogen, and R 2 is selected from the group consisting of a branched-alkyl group; and benzyl and the carbon atom marked with an * is an asymmetric carbon atom.
Claim 2
Dependent Claim
45 words
A liquid crystal compound of the formula: ##STR31## R 1 is an alkyl group, X is halogen, and R 2 is selected from the group consisting of a branched-alkyl group; and benzyl and the carbon atom marked with an * is an asymmetric carbon atom.
Claim 3
Dependent Claim
20 words
The smectic liquid compound of claim 1, wherein the alkyl group of R 1 contains 20 or less carbon atoms.
Claim 4
Dependent Claim
19 words
The smectic liquid compound of claim 1, wherein said X substituent is halogen and group R 2 is 1-methylpropyl.
Claim 5
Dependent Claim
19 words
The smectic liquid compound of claim 1, wherein said X substituent is halogen and group R 2 is 2-methylpropyl.
Claim 6
Dependent Claim
19 words
The smectic liquid compound of claim 1, wherein said X substituent is halogen and group R 2 is isopropyl.
Claim 7
Dependent Claim
19 words
The smectic liquid compound of claim 1, wherein said X substituent is halogen and group R 2 is benzyl.
Claim 8
Dependent Claim
55 words
A liquid crystal composition containing a smectic liquid crystal compound of the following formula as a component; ##STR32## wherein R 1 is a alkyl group, X is halogen, R 2 is selected from the group consisting of a branched-alkyl group and benzyl, and the carbon atom marked with an * is an asymmetric carbon atom.
Claim 9
Dependent Claim
55 words
A liquid crystal composition containing a smectic liquid crystal compound of the following formula as a component; ##STR32## wherein R 1 is a alkyl group, X is halogen, R 2 is selected from the group consisting of a branched-alkyl group and benzyl, and the carbon atom marked with an * is an asymmetric carbon atom.
References Cited (Backward Citations)
EP0136725A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |