Patent US4464283A successfully refreshed from Google Patents.
US4464283A
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Liquid crystal composition
Assignee: Merck Patent GmbH
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Filing: 1982-07-08
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Granted: 1984-08-07
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Expires: 2002-07-08
Abstract
Abstract A liquid crystal composition comprising trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, trans-4-n-pentyl-(4' -ethylbiphenyl-4)cyclohexane, trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl)benzoate, and 4-(trans-4-n-pentyl-cyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl is drivable over a wide temperature range and can be operated rapidly at low temperatures.
Inventors
- 👤 Shinji Hasegawa
- 👤 Kazuhisa Toriyama
- 👤 Ludwig Pohl
- 👤 Georg Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:05
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A liquid crystal composition comprising 29 to 36 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 28to 35 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 14 to 18 mole % trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 4 to 7 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 3 to 7 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 5 to 8 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl) -biphenyl; the total amount of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane and trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane being 64 mole % or more.
Claim 2
Dependent Claim
61 words
A liquid crystal composition comprising 29 to 36 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 28to 35 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 14 to 18 mole % trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 4 to 7 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 3 to 7 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 5 to 8 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl) -biphenyl; the total amount of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane and trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane being 64 mole % or more.
Claim 3
Dependent Claim
36 words
A liquid crystal composition comprising 32 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 33 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 16 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 6 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 6mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 7 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 4
Dependent Claim
36 words
A liquid crystal composition comprising 32 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 33 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 16 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 6 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 6mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 7 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 5
Dependent Claim
37 words
A liquid crystal composition comprising 36 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 29 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 14.5 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 4.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 5 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 8 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 6
Dependent Claim
37 words
A liquid crystal composition comprising 36 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 29 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 14.5 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 4.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 5 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 8 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 7
Dependent Claim
36 words
A liquid crystal composition comprising 36mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 29 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 17 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 5.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 5 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 7.5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 8
Dependent Claim
36 words
A liquid crystal composition comprising 36mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 29 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 17 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 5.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 5 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 7.5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 9
Dependent Claim
33 words
A liquid crystal composition comprising 30.5 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 35 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 18 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 6.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 35 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 6.
Claim 10
Dependent Claim
33 words
A liquid crystal composition comprising 30.5 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 35 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 18 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 6.5 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 35 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 6.
Claim 11
Dependent Claim
5 words
5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 12
Dependent Claim
5 words
5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 13
Dependent Claim
37 words
A liquid crystal composition comprising 32 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 34 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 18 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 7 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 4 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
Claim 14
Dependent Claim
37 words
A liquid crystal composition comprising 32 mole % of trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, 34 mole % of trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, 18 mole % of trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane, 7 mole % of trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 4 mole % of 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl) benzoate, and 5 mole % of 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl.
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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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |