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:
Jun. 26, 1979
Filed:
Jan. 16, 1978
Applicant:
Inventors:
Assignee:
Fisons Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
2603452 ; 542441 ; 424283 ;
Abstract
There are described compounds of formula I, ##STR1## in which R.sub.3 represents hydrogen, or alkyl C 1 to 6, R.sub.5 represents hydrogen, hydroxy, alkoxy C 1 to 6, alkanoyloxy C 2 to 6, alkenyloxy C 2 to 6, nitro, -NR.sub.1 R.sub.2, halogen, alkyl C 1 to 6, hydroxy-alkyl C 1 to 6, or hydroxy-alkoxy C 1 to 6,
Brown, Roger. (1979). Tricyclic mono-chromone-2-carboxylic acids (U.S. Patent No. 4159273). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4159273
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile