US4584120A
Expired / Lapsed
US
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Liquid crystal compound and liquid crystal composition
Assignee: Kanto Chemical Co Inc
•
Filing: 1984-05-15
•
Granted: 1986-04-22
•
Expires: 2004-05-15
Abstract
Abstract The liquid crystal compound of this invention is characterized by having the general formula. R-X-X'-COO-Y-Y'-R' wherein R and R' each represent an alkyl group, and X, X', Y and Y' each represent <IMAGE>
Inventors
- 👤 Tsunenori Fujii
- 👤 Kenji Suzuki
- 👤 Masahiro Yoshida
- 👤 Hisashi Okawa
- 👤 Kaoru Koto
- 👤 Hideki Ohmori
- 👤 Hisao Yokokura
- 👤 Yoshiaki Okabe
- 👤 Shintaroo Hattori
- 👤 Teruo Kitamura
- 👤 Akio Mukoh
- 👤 Mikio Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068; C09K19/10; C09K19/20; C09K19/2007
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
39 words
A liquid crystal compound characterized by having the general formula: ##STR66## wherein R and R' each represent an alkyl group, --X--X'-- is selected from the group consisting of ##STR67## and Y' is selected from the group consisting of ##STR68##
Claim 2
Dependent Claim
39 words
A liquid crystal compound characterized by having the general formula: ##STR66## wherein R and R' each represent an alkyl group, --X--X'-- is selected from the group consisting of ##STR67## and Y' is selected from the group consisting of ##STR68##
Claim 3
Dependent Claim
20 words
A liquid crystal compound according to claim 1 characterized in that the alkyl group has 1 to 8 carbon atoms.
Claim 4
Dependent Claim
56 words
A liquid crystal composition characterized by containing a mixture of liquid crystal compounds at least one of which is a liquid crystal compound of the general formula: ##STR69## wherein R and R' each represent an alkyl group, --X--X' is selected from the group consisting of ##STR70## and Y is selected from the group consisting of ##STR71##
Claim 5
Dependent Claim
56 words
A liquid crystal composition characterized by containing a mixture of liquid crystal compounds at least one of which is a liquid crystal compound of the general formula: ##STR69## wherein R and R' each represent an alkyl group, --X--X' is selected from the group consisting of ##STR70## and Y is selected from the group consisting of ##STR71##
Claim 6
Dependent Claim
10 words
A liquid crystal compound according to claim 1; namely, ##STR72##
Claim 7
Dependent Claim
10 words
A liquid crystal compound according to claim 1; namely, ##STR73##
Claim 8
Dependent Claim
10 words
A liquid crystal compound according to claim 1; namely, ##STR74##
Claim 9
Dependent Claim
10 words
A liquid crystal compound according to claim 1; namely, ##STR75##
Claim 10
Dependent Claim
10 words
A liquid crystal compound according to claim 1; namely, ##STR76##
Claim 11
Dependent Claim
19 words
A liquid crystal composition according to claim 3, wherein said liquid crystal compound of the general formula is ##STR77##
Claim 12
Dependent Claim
19 words
A liquid crystal composition according to claim 3, wherein said liquid crystal compound of the general formula is ##STR78##
Claim 13
Dependent Claim
19 words
A liquid crystal composition according to claim 3, wherein said liquid crystal compound of the general formula is ##STR79##
Claim 14
Dependent Claim
19 words
A liquid crystal composition according to claim 3, wherein said liquid crystal compound of the general formula is ##STR80##
Claim 15
Dependent Claim
19 words
A liquid crystal composition according to claim 3, wherein said liquid crystal compound of the general formula is ##STR81##
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |