The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1995
Filed:
Mar. 08, 1994
Applicant:
Inventors:
Martin Schadt, Seltisberg, CH;
Alois Villiger, Basel, CH;
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
25229901 ; 25229961 ; 25229963 ; 25229966 ; 544298 ; 544335 ; 546339 ; 546346 ; 549369 ; 549374 ; 570127 ;
Abstract
The present invention provides compounds of the general formula: ##STR1## wherein R is an alkyl group with 1 to 12 carbon atoms or a group of the formula ##STR2## Ring A.sup.1 is 1,4-phenylene, which is unsubstituted or substituted with fluorine, pyridine-2,5-diyl or pyrimidine-2,5-diyl;
Schadt, Martin. (1995). Liquid crystal compounds (U.S. Patent No. 5447657). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5447657
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile