US4818432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-substituted biphenyl compound
Assignee: JNC Corp
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Filing: 1987-04-27
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Granted: 1989-04-04
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Expires: 2007-04-27
Abstract
Abstract A novel 3-substituted biphenyl compound useful as a component of chiral liquid crystal compositions useful for light-switching elements by the use of ferroelectric liquid crystals; a chiral liquid crystal composition containing the compound; and a light-switching element utilizing the composition are provided, which compound is expressed by the formula ##STR1## wherein either one of R 1 or R 2 represents an alkyl group of 4 to 18 carbon atoms having a methyl branch and the other thereof represents an alkyl group of 2 to 18 carbon atoms; X represents a halogen atom of F, Cl or Br or cyano group; and l represents 0 to 1.
Inventors
- 👤 Kazutoshi Miyazawa
- 👤 Takashi Inukai
- 👤 Hiromichi Inoue
- 👤 Shinichi Saito
- 👤 Kouji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:51
CPC Classifications
C; C07; C07C; C07C255/00; C07C43/00; C07C43/02; C07C43/20; C07C43/225; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/84; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/126
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
32 words
A chiral smectic c liquid crystal compound selected from the group consisting of 4'-(6-methyl-octyloxy)-3'-fluoro-4-pentylbiphenyl, 4'-(6-methyl-octyloxy)-3'-fluoro-4-octylbiphenyl, 4'-(7-methyl-nonyloxy)-3'-fluoro-4-octylbiphenyl, 4'-(7-methyl-nonyloxy)-3'-fluoro-4-decylbiphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-pentylbiphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-dodecylbiphenyl, 4'-decyloxy-3'-fluoro-4-(6-methyl-octyl)-biphenyl, 4'-dodecyloxy-3'-fluoro-4-(6-methyl-octyl)-biphenyl, ' -(6-methyl-octyloxy)-3'-fluoro-4-nonanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-bromo-4-decanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-cyano-4-decanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-fluoro-4-dodecanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-chloro-4-dodecanoyl-biphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-dodecanoyl-biphenyl, 4'-octyloxyl-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl, 4'-decycloxy-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl, and 4'-dodecyloxy-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl.
Claim 2
Dependent Claim
32 words
A chiral smectic c liquid crystal compound selected from the group consisting of 4'-(6-methyl-octyloxy)-3'-fluoro-4-pentylbiphenyl, 4'-(6-methyl-octyloxy)-3'-fluoro-4-octylbiphenyl, 4'-(7-methyl-nonyloxy)-3'-fluoro-4-octylbiphenyl, 4'-(7-methyl-nonyloxy)-3'-fluoro-4-decylbiphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-pentylbiphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-dodecylbiphenyl, 4'-decyloxy-3'-fluoro-4-(6-methyl-octyl)-biphenyl, 4'-dodecyloxy-3'-fluoro-4-(6-methyl-octyl)-biphenyl, ' -(6-methyl-octyloxy)-3'-fluoro-4-nonanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-bromo-4-decanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-cyano-4-decanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-fluoro-4-dodecanoyl-biphenyl, 4'-(6-methyl-octyloxy)-3'-chloro-4-dodecanoyl-biphenyl, 4'-(8-methyl-decyloxy)-3'-fluoro-4-dodecanoyl-biphenyl, 4'-octyloxyl-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl, 4'-decycloxy-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl, and 4'-dodecyloxy-3'-fluoro-4-(6-methyl-octanoyl)-biphenyl.
Claim 3
Dependent Claim
25 words
A chiral smectic C liquid crystal composition having at least two components at least one of which is a compound set forth in claim 1.
References Cited (Backward Citations)
US4216109A
Cited
US4138359A
Cited
US4490305A
Cited
EP0084194A1
Cited
US4478740A
Cited
US4544771A
Cited
US4505838A
Cited
US4536321A
Cited
US4614609A
Cited
EP0188222A2
Cited
JPH0847642A
Cited
JPH0881849A
Cited
JPH08277644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |