Patent US2642398A successfully refreshed from Google Patents.
US4533488A
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US
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Pyrimidine derivatives
Assignee: JNC Corp
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Filing: 1983-08-24
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Granted: 1985-08-06
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Expires: 2003-08-24
Abstract
Abstract Novel organic compounds useful as a component of liquid crystal compositions are provided which compounds are 5-substituted-2-(4'-substituted biphenylyl)pyrimidines and 5-substituted-2-[4'-(trans-4"-substituted cyclohexyl) phenyl]pyrimidines expressed by the general formula ##STR1## wherein R 1 and R 2 each represent an alkyl group or an alkyloxy group having 1 to 10 carbon atoms and ##STR2## represents cyclohexane ring or benzene ring.
Inventors
- 👤 Masahiro Fukui
- 👤 Kisei Kitano
- 👤 Masami Tanaka
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:11
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D239/28; C07D239/30; C07D239/46; C07D239/52; C07D239/54; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
37 words
A compound having the general formula ##STR20## wherein R 1 and R 2 each represent an alkyl group or an alkyloxy group having 1 to 10 carbon atoms and ##STR21## represents a cyclohexane ring or benzene ring.
Claim 2
Dependent Claim
37 words
A compound having the general formula ##STR20## wherein R 1 and R 2 each represent an alkyl group or an alkyloxy group having 1 to 10 carbon atoms and ##STR21## represents a cyclohexane ring or benzene ring.
Claim 3
Dependent Claim
11 words
A compound according to claim 1 which is a 5-substituted-2-(4'-substituted biphenylyl)-pyrimidine.
Claim 4
Dependent Claim
11 words
A compound according to claim 1 which is a 5-substituted-2-[4'-(trans-4"-substituted cyclohexyl)phenyl]pyrimidine.
Claim 5
Dependent Claim
33 words
A compound according to claim 1 which is a 5-alkyl-2-[4'-(trans-4"-alkylcyclohexyl)phenyl]-pyrimidine expressed by the general formula ##STR22## wherein R 1 and R 2 each represent an alkyl group having 1 to 10 carbon atoms.
Claim 6
Dependent Claim
19 words
A compound according to claim 4 wherein R 1 and R 2 each have 2 to 7 carbon atoms.
Claim 7
Dependent Claim
27 words
A liquid crystal composition which contains at least two liquid crystal components wherein at least one component thereof is a compound as set forth in claim 1.
Claim 8
Dependent Claim
27 words
A liquid crystal composition which contains at least two liquid crystal components wherein at least one component thereof is a compound as set forth in claim 2.
Claim 9
Dependent Claim
27 words
A liquid crystal composition which contains at least two liquid crystal components wherein at least one component thereof is a compound as set forth in claim 3.
Claim 10
Dependent Claim
27 words
A liquid crystal composition which contains at least two liquid crystal components wherein at least one component thereof is a compound as set forth in claim 4.
Claim 11
Dependent Claim
27 words
A liquid crystal composition which contains at least two liquid crystal components wherein at least one component thereof is a compound as set forth in claim 5.
Claim 12
Dependent Claim
8 words
As a compound according to claim 1, 5-hexyl-2-(4'-pentylbiphenylyl)-pyrimidine.
Claim 13
Dependent Claim
9 words
As a compound according to claim 1, 5-ethyl-2-(4'-trans-4"-propylcyclohexyl phenyl)-pyrimidine.
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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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |