US4673756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nematic liquid crystalline compounds
Assignee: DIC Corp
•
Filing: 1985-06-17
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Granted: 1987-06-16
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Expires: 2005-06-17
Abstract
Abstract A compound of the general formula <IMAGE> wherein A denotes a substituted ring structure represented by the formula <IMAGE> <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
2026-11-01 20:49
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: 5
Claim 1
Independent Claim
33 words
A compound of the general formula ##STR51## wherein A denotes a substituted ring structure represented by the formula ##STR52## the substituent R denotes a linear alkyl group having 1 to 9 carbon atoms.
Claim 2
Dependent Claim
33 words
A compound of the general formula ##STR51## wherein A denotes a substituted ring structure represented by the formula ##STR52## the substituent R denotes a linear alkyl group having 1 to 9 carbon atoms.
Claim 3
Dependent Claim
26 words
The compound of the general formula as set forth in claim 1 wherein R is a linear alkyl group having from 2 to 5 carbon atoms.
Claim 4
Dependent Claim
20 words
The compound of the general formula as set forth in claim 1 wherein R is C 3 H 7 .
Claim 5
Dependent Claim
17 words
The compound of the general formula of claim 1 wherein R is C 5 H 11 .
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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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |