US4818429A
Expired / Lapsed
US
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Cyclohexylphenylpyridazines
Assignee: JNC Corp
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Filing: 1987-09-11
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Granted: 1989-04-04
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Expires: 2007-09-11
Abstract
Abstract A compound useful as a component constituting ferroelectric liquid crystal display elements and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R represents a linear or branched chain alkyl group of 1 to 20 carbon atoms and R* represents an optically active alkyl group, alkoxy group, alkoxyalkyl group, alkoxyalkoxy group, alkanoyloxyalkyl group, alkanoyloxyalkoxy group, halogenated alkyl group or halogenated alkoxy group each of 2 to 20 carbon atoms.
Inventors
- 👤 Shinichi Saito
- 👤 Takashi Inukai
- 👤 Hiromichi Inoue
- 👤 Kazutoshi Miyazawa
- 👤 Kouji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:16
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3455
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
A compound expressed by the formula ##STR17## wherein R represents a normal alkyl group of 5-7 carbon atoms and R* represents an optically active alkyl or alkoxyalkyl group each of which has 5-8 carbon atoms with one methyl branching.
Claim 2
Dependent Claim
39 words
A compound expressed by the formula ##STR17## wherein R represents a normal alkyl group of 5-7 carbon atoms and R* represents an optically active alkyl or alkoxyalkyl group each of which has 5-8 carbon atoms with one methyl branching.
Claim 3
Dependent Claim
23 words
A compound according to claim 1 wherein said R* represents an optically active alkyl group of 5-8 carbon atoms with one methyl branching.
Claim 4
Dependent Claim
23 words
A compound according to claim 1 wherein said R* represents an optically active alkoxyalkyl group of 5-8 carbon atoms with one methyl branching.
Claim 5
Dependent Claim
23 words
A liquid crystal composition comprising at least two components 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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |