Patent CA464353A successfully refreshed from Google Patents.
Patent US4725688A successfully refreshed from Google Patents.
US4725688A
Expired / Lapsed
US
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Liquid crystal compound
Assignee: Seiko Instruments Inc
•
Filing: 1985-05-30
•
Granted: 1988-02-16
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Expires: 2005-05-30
Abstract
Abstract PCT No. PCT/JP85/00302 Sec. 371 Date Feb. 6, 1986 Sec. 102(e) Date Feb. 6, 1986 PCT Filed May 30, 1985 PCT Pub. No. WO86/00087 PCT Pub. Date Jan. 3, 1986.The present invention is an optically active liquid crystal compound shown in the following general formula; <IMAGE> [wherein, A and B respectively show one of -, -O-, <IMAGE> (- shows direct bond), one of R1 and R2 shows direct chain alkyl group and the other one shows either alkyl group having asymmetric carbon atom or alkoxy alkyl group having asymmetric carbon atom and ether bonding. Also, onto the asymmetric carbon atom, one of the groups -CH3, -CN, -Cl is added.] It is clear that there are many compounds in these liquid crystal compounds, that show Sm C* phase in a wide temperature range close to room temperature and that have high response speed.
Inventors
- 👤 Masaaki Taguchi
- 👤 Takamasa Harada
- 👤 Hitoshi Suenaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:32
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D239/28; C07D239/32; C07D239/34; C07D239/46; C07D239/52; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3463
Claims Analysis
Total Claims: 79
Claim 1
Independent Claim
141 words
A ferroelectric liquid crystal compound of the formula ##STR149## wherein one of R 1 and R 2 is a straight chain alkyl group of 5 to 14 carbon atoms and the other is an alkyl or alkoxyalkyl group which contains just one asymmetric carbon atom, each of a and b is 0 or 1, one member of the group --CH 3 , --CN or --Cl is attached to the asymmetric carbon atom and each of A and B is --O--, ##STR150## wherein: when a is 0, B is --O-- and b is 1; when A is --O-- and a is 1, B is --O-- or ##STR151## and b is 0 or 1; when A is ##STR152## and a is 1, B is --O-- and b is 0 or 1, and when A is ##STR153## and a is 1, b is 0.
Claim 2
Dependent Claim
141 words
A ferroelectric liquid crystal compound of the formula ##STR149## wherein one of R 1 and R 2 is a straight chain alkyl group of 5 to 14 carbon atoms and the other is an alkyl or alkoxyalkyl group which contains just one asymmetric carbon atom, each of a and b is 0 or 1, one member of the group --CH 3 , --CN or --Cl is attached to the asymmetric carbon atom and each of A and B is --O--, ##STR150## wherein: when a is 0, B is --O-- and b is 1; when A is --O-- and a is 1, B is --O-- or ##STR151## and b is 0 or 1; when A is ##STR152## and a is 1, B is --O-- and b is 0 or 1, and when A is ##STR153## and a is 1, b is 0.
Claim 3
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR154## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 4
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR155## wherein R 3 * is and alkyl group containing just one asymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 5
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR156## wherein R 3 * is an alkyl group containing just one asymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 6
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR157## wherein m is 0 to 8, n is 5 to 14, X is --Cl or --CN and * shows an asymmetric carbon atom.
Claim 7
Dependent Claim
32 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR158## wherein m is 1 to 8, n is 5 to 14 and C shows the assymetric carbon atom.
Claim 8
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR159## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 9
Dependent Claim
14 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR160##
Claim 10
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR161## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a stright chain alkyl group.
Claim 11
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR162## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a striaght chain alkyl group.
Claim 12
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR163## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 13
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR164## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 14
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR165## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 15
Dependent Claim
37 words
A ferroelectric liquid crystal compound as claimed in claim 1, of the formula ##STR166## wherein R 3 * is an alkyl group containing just one assymmetric carbon atom and R 4 is a straight chain alkyl group.
Claim 16
Dependent Claim
54 words
A ferroelectric liquid crystal compound as claimed in claim 1, wherein one of R 1 and R 2 is a straight chain alkyl group of 5 to 14 carbon atoms and the other is an alkoxyalkyl group containing just one asymmetric carbon atom which is located in the alkoxy portion of the alkoxyalkyl group.
Claim 17
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-octyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 18
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-undecyl-2-[4-(2'-methylbutyloxy)phenyl]pyrimidine.
Claim 19
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-hexyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 20
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-heptyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 21
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-octyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 22
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-nonyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 23
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-decyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 24
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-undecyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 25
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-dodecyl-2-[4-(3'-methylpentyloxy)phenyl]pyrimidine.
Claim 26
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-hexyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 27
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-heptyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 28
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-octyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 29
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-nonyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 30
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-decyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 31
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-undecyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 32
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-dodecyl-2-[4-(4'-methylhexyloxgy)phenyl]pyrimidine.
Claim 33
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-tetradecyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 34
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-hexyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 35
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-heptyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 36
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-octyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 37
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-nonyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 38
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-decyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 39
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-undecyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 40
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-dodecyl-2-[4-(5'-methylheptyloxy)phenyl]pyrimidine.
Claim 41
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-hexyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 42
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-heptyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 43
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-nonyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 44
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-decyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 45
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-undecyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 46
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-dodecyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 47
Dependent Claim
8 words
The compound of claim 2, which is (s)-5-n-tetradecyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 48
Dependent Claim
8 words
The compound of claim 2, which is (R)-5-n-undecyl-2-[4-(2'-methylbutyloxy)phenyl]pyrimidine.
Claim 49
Dependent Claim
8 words
The compound of claim 2, which is (R)-5-n-octyl-2-[4-(4'-methylhexyloxy)phenyl]pyrimidine.
Claim 50
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-octyl-2-[4-(6'-methyloctanoyloxy)phenyl]pyrimidine.
Claim 51
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-octyl-2-[4-(4'-methylhexanoyloxy)phenyl]pyrimidine.
Claim 52
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-undecyl-2-[4-(2'-methylbutanoyloxy)phenyl]pyrimidine.
Claim 53
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-undecyl-2-[4-(4'-methylhexanoyloxy)phenyl]pyrimidine.
Claim 54
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-undecyl-2-[4-(6'-methyloctanoyloxy)phenyl]pyrimidine.
Claim 55
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-tetradecyl-2-[4-(4'-methylhexanoyloxy)phenyl]pyrimidine.
Claim 56
Dependent Claim
8 words
The compound of claim 3, which is (s)-5-n-tetradecyl-2-[4-(6'-methyloctanoyloxy)phenyl]pyrimidine.
Claim 57
Dependent Claim
8 words
The compound of claim 4, which is (s)-5-n-octyl-2-[4-(6'-methyloctanyloxy)phenyl]pyrimidine.
Claim 58
Dependent Claim
8 words
The compound of claim 5, which is (s)-5-n-octyl-2-[4-(3'-chloropentyloxy)phenyl]pyrimidine.
Claim 59
Dependent Claim
8 words
The compound of claim 5, which is (s)-5-n-undecyl-2-[4-(3'-cyanopentyloxy)phenyl]pyrimidine.
Claim 60
Dependent Claim
8 words
The compound of claim 6, which is (s)-5-n-hexyl-2-[4-(2'-methylbutyloxybutyloxy)phenyl]pyrimidine.
Claim 61
Dependent Claim
8 words
The compound of claim 6, which is (s)-5-n-octyl-2-[4-(2'-methylbutyloxybutyloxy)phenyl]pyrimidine.
Claim 62
Dependent Claim
8 words
The compound of claim 6, which is (s)-5-n-undecyl-2-[4-(2'-methylbutyloxybutyloxy)phenyl]pyrimidine.
Claim 63
Dependent Claim
8 words
The compound of claim 7, which is (s)-5-(n-undecyloxy)-2-[4-(2'-methylbutyloxy)phenyl]pyrimidine.
Claim 64
Dependent Claim
8 words
The compound of claim 7, which is (s)-5-(n-octyloxy)-2-[4-(3'-methylheptyloxy)phenyl]pyrimidine.
Claim 65
Dependent Claim
8 words
The compound of claim 7, which is (s)-5-(n-octyloxy)-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 66
Dependent Claim
8 words
The compound of claim 7, which is (s)-5-(n-undecyloxy)-2-[4-(3'-methylheptyloxy)phenyl]pyrimidine.
Claim 67
Dependent Claim
8 words
The compound of claim 7, which is (s)-5-(n-undecyloxy)-2-[4-(2'-methyloctyloxy)phenyl]pyrimidine.
Claim 68
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-undecyloxy)-2-[4-(2'-methylbutanoyloxy)phenyl]pyrimidine.
Claim 69
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-octyloxy)-2-[4(2'-methylbutanoyloxy)phenyl]pyrimidine.
Claim 70
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-octyloxy)-2-[4-(3'-methylheptanoyloxy)phenyl]pyrimidine.
Claim 71
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-octyloxy)-2-[4-(4'-methylhexanoyloxy)phenyl]pyrimidine.
Claim 72
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-octyloxy)-2-[4-(6'-methyloctanoyloxy)phenyl]pyrimidine.
Claim 73
Dependent Claim
8 words
The compound of claim 8, which is (s)-5-(n-undecyloxy)-2-[4-(3'-methylheptanoyloxy)phenyl]pyrimidine.
Claim 74
Dependent Claim
8 words
The compound of claim 9, which is (s)-2-(4-n-octyloxyphenyl)-5-(6'-methyloctyl)pyrimidine.
Claim 75
Dependent Claim
8 words
The compound of claim 10, which is (s)-2-(4-n-octylphenyl)-5-(6'-methyloctyloxy)pyrimidine.
Claim 76
Dependent Claim
8 words
The compound of claim 11, which is (s)-5-n-octyloxycarbonyl-2-[4-(6'-methyloctyloxy)phenyl]pyrimidine.
Claim 77
Dependent Claim
8 words
The compound of claim 12, which is (s)-5-(6'-methyloctyloxycarbonyl)-2-(4'-n-octyloxyphenyl)pyrimidine.
Claim 78
Dependent Claim
8 words
The compound of claim 13, which is (s)-2-(4-n-undecyloxyphenyl)-5-(2'methylbutyloxy)pyrimidine.
Claim 79
Dependent Claim
8 words
The compound of claim 14, which is (s)-2-(4-n-undecanoyloxyphenyl)-5-(2'-methylbutyloxy)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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |