US4439340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyano-mono-or diphenylbicyclohexane derivatives
Assignee: JNC Corp
•
Filing: 1982-07-08
•
Granted: 1984-03-27
•
Expires: 2002-07-08
Abstract
Abstract Liquid crystal compounds used for liquid crystal display elements are provided, which exhibit a liquid crystal phase within a broad temperature range and also have a low viscosity. The compounds are cyano-mono- or diphenylbicyclohexane derivatives expressed by the general formula ##STR1## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms and n is 1 or 2.
Inventors
- 👤 Tetsuhiko Kojima
- 👤 Masakazu Tsuji
- 👤 Shigeru Sugimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
C; C07; C07C; C07C255/00; C07C17/00; C07C17/07; C07C17/08; C07C17/093; C07C17/10; C07C17/12; C07C29/00; C07C29/36; C07C29/38; C07C29/40; C07C35/00; C07C35/02; C07C35/08; C07C35/17; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C07B; C07B2200/00; C07B2200/09; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A compound expressed by the formula ##STR7## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms, and n is 1 or 2.
Claim 2
Dependent Claim
27 words
A compound expressed by the formula ##STR7## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms, and n is 1 or 2.
Claim 3
Dependent Claim
21 words
A compound expressed by the formula ##STR8## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms.
Claim 4
Dependent Claim
21 words
A compound expressed by the formula ##STR8## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms.
Claim 5
Dependent Claim
21 words
A compound expressed by the formula ##STR9## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms.
Claim 6
Dependent Claim
21 words
A compound expressed by the formula ##STR9## wherein R represents hydrogen or an alkyl group of 1 to 15 carbon atoms.
Claim 7
Dependent Claim
21 words
A liquid crystal composition which comprises a mixture of compounds at least one of which is a compound of claim 1.
References Cited (Backward Citations)
US4130502A
Cited
DE2701591A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |