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US4622162A
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Liquid crystal composition
Assignee: Sharp Corp
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Filing: 1984-05-30
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Granted: 1986-11-11
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Expires: 2004-05-30
Abstract
Abstract A liquid crystal composition which comprises of at least one compound selected from each of the following groups of compound: the first group which consists of compounds expressed as the structural formulas, ##STR1## the second group which consists of compounds expressed as the structural formulas, ##STR2## the third group which consists of compounds expressed as the structural formulas, ##STR3## the fourth group which consists of compounds expressed as the structural formulas, ##STR4## and the fifth group which consists of compounds expressed as the structural formula, ##STR5## wherein groups R 1 to R 19 are all straight-chain, alkyl groups expressed as C n H 2n+1 (n=1˜7).
Inventors
- 👤 Naofumi Kimura
- 👤 Kenichi Makagawa
- 👤 Yutaka Ishii
- 👤 Fumiaki Funada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:18
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
A liquid crystal composition which comprises of at least one compound selected from each of the following groups of compound: the first group which consists of compounds expressed as the structural formulas, ##STR75## the second group which consists of compounds expressed as the structural formulas, ##STR76## the third group which consists of compounds expressed as the structural formulas, ##STR77## the fourth group which consists of compounds expressed as the structural formulas, ##STR78## and the fifth group which consists of compounds expressed as the structural formula, ##STR79## wherein groups R 1 to R 19 are all straight-chain, alkyl groups expressed as C n H 2n+1 (n=1˜7) and wherein the compounds from the first and second groups are present in an amount of from 10 to 30% by weight, the compound from the third group is present in an amount of from 20 to 35% by weight, the compound from the fourth group is present in an amount of from 15 to 30% by weight, and the compound from the fifth group is present in an amount of more than 10% by weight.
Claim 2
Dependent Claim
181 words
A liquid crystal composition which comprises of at least one compound selected from each of the following groups of compound: the first group which consists of compounds expressed as the structural formulas, ##STR75## the second group which consists of compounds expressed as the structural formulas, ##STR76## the third group which consists of compounds expressed as the structural formulas, ##STR77## the fourth group which consists of compounds expressed as the structural formulas, ##STR78## and the fifth group which consists of compounds expressed as the structural formula, ##STR79## wherein groups R 1 to R 19 are all straight-chain, alkyl groups expressed as C n H 2n+1 (n=1˜7) and wherein the compounds from the first and second groups are present in an amount of from 10 to 30% by weight, the compound from the third group is present in an amount of from 20 to 35% by weight, the compound from the fourth group is present in an amount of from 15 to 30% by weight, and the compound from the fifth group is present in an amount of more than 10% by weight.
Claim 3
Dependent Claim
18 words
The liquid crystal composition of claim 1, wherein the first and second groups are about 20% by weight.
Claim 4
Dependent Claim
16 words
The liquid crystal composition of claim 1, wherein the third group is about 25% by weight.
Claim 5
Dependent Claim
16 words
The liquid crystal composition of claim 1, wherein the fifth group is about 20% by weight.
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |