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:
Apr. 10, 1990
Filed:
Jul. 13, 1988
Applicant:
Inventors:
Martin Petrzilka, CH-4303 Kaiseraugst, CH;
Martin Schadt, CH-4411 Seltisberg, CH;
Alois Villiger, CH-4055 Basel, CH;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; C07C / ; C07D / ; C07D / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
3503 / ; 2522995 ; 2522996 ; 25229961 ; 25229963 ; 25229966 ; 3503 / ; 544335 ; 544242 ; 549370 ; 549373 ;
Abstract
This invention concerns compounds of the formula: ##STR1## wherein X is a single covalent bond, --CH.sub.2 CH.sub.2 --, 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a group of the formula: ##STR2## ring A is trans-1,4-cyclohexylene or, when X is a single covalent bond, ring A may also be 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; and