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. 03, 1985
Filed:
Jul. 05, 1983
Akira Nohara, Kyoto, JP;
Seiji Kuzuna, Kawanishi, JP;
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
The present invention relates to novel 5-oxo-5H-[1]benzopyrano[2,3-b]pyridine derivatives useful for effective medicines for the treatment of various connective tissue diseases such as chronic rheumatoid arthritis and varieties of inflammatory diseases caused by immunoreaction, which have the following formula: ##STR1## wherein R is the same or different and represents hydrogen, alkyl, alkoxy, nitro, hydroxyl, acyl, hydroxyalkyl, halogen with the proviso that m is 1,2 or 3, or a tetramethylene (--(CH.sub.2).sub.4 --) or butadienylene (--CH.dbd.CH--CH.dbd.CH--) group which, in conjunction with two adjacent carbon atoms on the ring, forms a six-membered ring with the proviso that m is 1; n is 1 or 2, or a physiologically acceptable salt or ester thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile