US4804759A
Expired / Lapsed
US
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Pyrimidine compound
Assignee: Adeka Corp
•
Filing: 1988-04-22
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Granted: 1989-02-14
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Expires: 2008-04-22
Abstract
Abstract The present invention discloses an optically active pyrimidine compound represented by the following general formula: ##STR1## wherein, a is 2 or 3, b is 2 or 3 and a+b=5; m is 4 to 18; and C represents an asymmetric carbon atom. The pyrimidine compound of the present invention is a liquid crystal compound useful as an electrooptic element wherein the response of the ferroelectric liquid crystal to an electric field is utilized.
Inventors
- 👤 Toshihiro Shibata
- 👤 Norio Kurosawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:43
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3463
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
37 words
An optically active pyrimidine compound represented by the following general formula: ##STR11## wherein, a is 2 or 3, b is 2 or 3 and a+b=5; m is 4 to 18; and C represents an asymmetric carbon atom.
Claim 2
Dependent Claim
37 words
An optically active pyrimidine compound represented by the following general formula: ##STR11## wherein, a is 2 or 3, b is 2 or 3 and a+b=5; m is 4 to 18; and C represents an asymmetric carbon atom.
Claim 3
Dependent Claim
18 words
A pyrimidine compound as set forth in claim 1 in which a is 2 and b is 3.
Claim 4
Dependent Claim
18 words
A pyrimidine compound as set forth in claim 1 in which a is 3 and b is 2.
Claim 5
Dependent Claim
22 words
A pyrimidine compound as set forth in any one of claims 1, 2 or 3 in which m is 6 to 12.
Claim 6
Dependent Claim
20 words
A pyrimidine compound as set forth in any one of claims 1, 2 or 3 in which m is 8.
Claim 7
Dependent Claim
20 words
A pyrimidine compound as set forth in any one of claims 1, 2 or 3 in which m is 10.
Claim 8
Dependent Claim
12 words
A pyrimidine compound of claim 1 represented by the following formula: ##STR12##
Claim 9
Dependent Claim
12 words
A pyrimidine compound of claim 1 represented by the following formula: ##STR13##
Claim 10
Dependent Claim
12 words
A pyrimidine compound of claim 1 represented by the following formula: ##STR14##
Claim 11
Dependent Claim
12 words
A pyrimidine compound of claim 1 represented by the following formula: ##STR15##
Claim 12
Dependent Claim
14 words
A pyrimidine compound as set forth in claim 4 in which m is 8.
Claim 13
Dependent Claim
14 words
A pyrimidine compound as set forth in claim 4 in which m is 10.
References Cited (Backward Citations)
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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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |