US4710585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal compound
Assignee: Seiko Instruments Inc
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Filing: 1985-06-10
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Granted: 1987-12-01
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Expires: 2005-06-10
Abstract
Abstract A liquid crystal compound represented by the following general formula: R*O-A-R or R*COO-A-R wherein R* stands for an alkyl group having an asymmetric carbon atom, R stands for a linear alkyl group, and A stands for <IMAGE> +TR <IMAGE>
Inventors
- 👤 Masaaki Taguchi
- 👤 Hitoshi Suenaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:49
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
A liquid crystal compound selected from the group consisting of 4"-octylphenyl 4'-(6-methyloctyloxy)benzoate, 4'-(6'-methyloctyloxy)phenyl 4-n-octylbenzoate, 4'-n-octylphenyl 4-(5-methylheptylcarboxy)-benzoate and 4"-(6"-methyloctyloxy)phenyl 4-n-heptylbiphenyl-4'-carboxylate.
Claim 2
Dependent Claim
19 words
A liquid crystal compound selected from the group consisting of 4"-octylphenyl 4'-(6-methyloctyloxy)benzoate, 4'-(6'-methyloctyloxy)phenyl 4-n-octylbenzoate, 4'-n-octylphenyl 4-(5-methylheptylcarboxy)-benzoate and 4"-(6"-methyloctyloxy)phenyl 4-n-heptylbiphenyl-4'-carboxylate.
Claim 3
Dependent Claim
12 words
A liquid crystal compound of the formula ##STR19## wherein R* is ##STR20##
Claim 4
Dependent Claim
12 words
A liquid crystal compound of the formula ##STR19## wherein R* is ##STR20##
Claim 5
Dependent Claim
2 words
4"-octylphenyl 4'-(6-methyloctyloxy)benzoate.
Claim 6
Dependent Claim
2 words
4"-octylphenyl 4'-(6-methyloctyloxy)benzoate.
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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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |