US4393231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine-containing phenyl benzoate compounds, and their production and use
Assignee: Daikin Industries Ltd
•
Filing: 1981-09-11
•
Granted: 1983-07-12
•
Expires: 2001-09-11
Abstract
Abstract Fluorine-containing phenyl benzoate compounds which have the general formula: <IMAGE> wherein R is a C1-C12 perfluoroalkyl group, a C1-C12 alkyl group, a C1-C12 alkoxy group, a C2-C13 alkanoyloxy group, a C2-C13 alkoxycarbonyl group, a C2-C13 alkoxycarbonyloxy group or a C2-C13 alkyldioxycarbonyl group and X is a C1-C12 alkyl group, a C1-C12 alkoxy group, a cyano group, a trifluoromethyl group or a nitro group with the proviso that X is trifluoromethyl when R is other than perfluoroalkyl are useful as components of liquid crystals.
Inventors
- 👤 Susumu Misaki
- 👤 Masahiro Suefuji
- 👤 Tamio Mitote
- 👤 Naotake Matsumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:42
CPC Classifications
C; C07; C07C; C07C255/00; C07C63/00; C07C63/68; C07C63/70; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A fluorine-containing phenyl benzoate compound of the formula: ##STR37## wherein R is a C 6 -C 8 alkoxy group and X is a trifluoromethyl group.
Claim 2
Dependent Claim
25 words
A fluorine-containing phenyl benzoate compound of the formula: ##STR37## wherein R is a C 6 -C 8 alkoxy group and X is a trifluoromethyl group.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |