US4822519A
Expired / Lapsed
US
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Nematic liquid crystal composition
Assignee: JNC Corp
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Filing: 1987-08-27
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Granted: 1989-04-18
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Expires: 2007-08-27
Abstract
Abstract A nematic liquid crystal composition whose threshold voltage is scarcely influenced by temperature changes is provided, which composition comprises at least two components at least one of which is a compound expressed by the formula ##STR1## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, ##STR2## each independently represent a benzene ring or a cyclohexane ring and n represents an integer of 0 or 1, said compound being contained in 10 to 100% by weight in said composition.
Inventors
- 👤 Hideo Saito
- 👤 Shinichi Sawada
- 👤 Kenji Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:09
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K19/10; C09K19/12; C09K19/42; C09K19/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
A nematic liquid crystal composition comprising, by weight, 10 to 80% of at least one compound of a component having the formula ##STR85## 5to 50% of a component (B) comprising at least one member of the group consisting of the compounds expressed by the formulas (B1) to (B7) ##STR86## 5to 50% of a component (C) comprising at least one member of the group consisting of the compounds expressed by the formulas (C1) to (C11) ##STR87## 5to 50% of a component (D) comprising at least one member of the group consisting of the compounds expressed by the formulas (D1) to (D10) ##STR88## wherein R 1 and R 4 each independently represents an alkyl group or an alkoxy group of 1 to 10 carbon atoms and R 2 , R 3 , R 5 , and R 6 each independently represents an alkyl group or an alkoxy group of 1 to 8 carbon atoms.
Claim 2
Dependent Claim
152 words
A nematic liquid crystal composition comprising, by weight, 10 to 80% of at least one compound of a component having the formula ##STR85## 5to 50% of a component (B) comprising at least one member of the group consisting of the compounds expressed by the formulas (B1) to (B7) ##STR86## 5to 50% of a component (C) comprising at least one member of the group consisting of the compounds expressed by the formulas (C1) to (C11) ##STR87## 5to 50% of a component (D) comprising at least one member of the group consisting of the compounds expressed by the formulas (D1) to (D10) ##STR88## wherein R 1 and R 4 each independently represents an alkyl group or an alkoxy group of 1 to 10 carbon atoms and R 2 , R 3 , R 5 , and R 6 each independently represents an alkyl group or an alkoxy group of 1 to 8 carbon atoms.
Claim 3
Dependent Claim
14 words
A nematic liquid crystal composition according to claim 1 wherein said compound is ##STR89##
Claim 4
Dependent Claim
14 words
A nematic liquid crystal composition according to claim 1 wherein said compound is ##STR90##
Claim 5
Dependent Claim
14 words
A nematic liquid crystal composition according to claim 1 wherein said compound is ##STR91##
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |