Patent US4551280A successfully refreshed from Google Patents.
US4551280A
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US
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Nematic liquid crystalline compounds
Assignee: DIC Corp
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Filing: 1983-10-28
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Granted: 1985-11-05
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Expires: 2003-10-28
Abstract
Abstract A compound of the general formula <IMAGE> wherein A denotes a substituted ring structure represented by the formula <IMAGE> or <IMAGE> the substituent R denotes a linear alkyl group having 1 to 9 carbon atoms, and the cyclohexane rings are both arranged in a trans(equatorial-equatorial)-form.
Inventors
- 👤 Makoto Sasaki
- 👤 Haruyoshi Sasaki
- 👤 Hisato Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:37
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
A compound of the general formula ##STR59## wherein A denotes a substituted ring structure represented by the formula ##STR60## or ##STR61## the substituent R denotes a linear alkyl group having 1 to 9 carbon atoms, and the cyclohexane rings are both arranged in a trans(equatorial-equatorial)form.
Claim 2
Dependent Claim
45 words
A compound of the general formula ##STR59## wherein A denotes a substituted ring structure represented by the formula ##STR60## or ##STR61## the substituent R denotes a linear alkyl group having 1 to 9 carbon atoms, and the cyclohexane rings are both arranged in a trans(equatorial-equatorial)form.
Claim 3
Dependent Claim
17 words
The compound of claim 1 wherein A is the substituted ring structure represented by the formula ##STR62##
Claim 4
Dependent Claim
19 words
The compound of claim 2 wherein R denotes a linear alkyl group having from 2 to 7 carbon atoms.
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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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |