US4405488A
Expired / Lapsed
US
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Liquid-crystalline halogenobenzene derivatives
Assignee: JNC Corp
•
Filing: 1981-09-16
•
Granted: 1983-09-20
•
Expires: 2001-09-16
Abstract
Abstract New liquid crystal compounds having a low viscosity and nevertheless having a high transparent point and a broad nematic temperature range, and liquid crystal compositions containing the same are provided. The compounds are liquid-crystalline halogenobenzene derivatives expressed by the general formula ##STR1## wherein R represents an alkyl group having 1 to 10 carbon atoms; ##STR2## and X and Y each are H, F or Cl, at least one of X and Y being F or Cl.
Inventors
- 👤 Shigeru Sugimori
- 👤 Tetsuhiko Kojima
- 👤 Masakazu Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:40
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3098; C07; C07C; C07C17/00; C07C17/35; C07C17/354; C07C25/00; C07C25/18; C07C29/00; C07C29/17; C07C29/19; C07C29/20; C07C29/36; C07C29/38; C07C29/40; C07C45/00; C07C45/27; C07C45/29; C07C45/292; C07C49/00; C07C49/385; C07C49/417; C07C49/587; C07C49/657; C09K19/3001; C09K19/3003; C07B; C07B2200/00; C07B2200/09; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
43 words
A liquid-crystalline halogenobenzene compound expressed by the formula ##STR25## wherein R represents an alkyl group having 1 to 10 carbon atoms; ##STR26## and X and Y each are H, F or Cl, at least one of X and Y being F or Cl.
Claim 2
Dependent Claim
43 words
A liquid-crystalline halogenobenzene compound expressed by the formula ##STR25## wherein R represents an alkyl group having 1 to 10 carbon atoms; ##STR26## and X and Y each are H, F or Cl, at least one of X and Y being F or Cl.
Claim 3
Dependent Claim
20 words
A compound according to claim 1 wherein said ##STR27## said X represents H; and said Y represents F or Cl.
Claim 4
Dependent Claim
20 words
A compound according to claim 1 wherein said ##STR28## said X represents F or Cl; and said Y represents H.
Claim 5
Dependent Claim
16 words
A compound according to claim 1 wherein said ##STR29## said X and Y both represent F.
Claim 6
Dependent Claim
13 words
A compound according to claim 1 wherein said ##STR30## and X represents H.
Claim 7
Dependent Claim
9 words
A compound according to claim 1 wherein said ##STR31##
Claim 8
Dependent Claim
57 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a halogenobenzene compound expressed by the formula ##STR32## wherein R represents an alkyl group having 1 to 10 carbon atoms; ##STR33## and X and Y each are H, F or Cl, at least one of X and Y being F or Cl.
Claim 9
Dependent Claim
57 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a halogenobenzene compound expressed by the formula ##STR32## wherein R represents an alkyl group having 1 to 10 carbon atoms; ##STR33## and X and Y each are H, F or Cl, at least one of X and Y being F or Cl.
Claim 10
Dependent Claim
9 words
A compound according to claim 1 wherein said ##STR34##
Claim 11
Dependent Claim
9 words
A compound according to claim 1 wherein said ##STR35##
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |