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. 01, 1999
Filed:
Jul. 18, 1997
Applicant:
Inventors:
Mladen Trkovnik, Zagreb, HR;
Zrinka Ivezic, Zagreb, HR;
Zeljko Kelneric, Zagreb, HR;
Ljerka Polak, Zagreb, HR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546 89 ; 546 64 ; 514291 ;
Abstract
The present invention relates to novel coumarin quinolone carboxylic acids wherein the pyridone system is fused in 3,4-, 6,7- and 7,8-positions of the coumarin system, of the general formula I ##STR1## wherein R.sup.1 R.sup.2 =--NHCH=C(CO.sub.2 R.sup.6)CO, R.sup.3 =NO.sub.2 or NH.sub.2, R.sup.4 =R.sup.5 =H, R.sup.6 =H or C.sub.2 H.sub.5 ;
Trkovnik, Mladen. (1999). Certain 4h-�1!benzopyrano�3,4-b!pyridine derivatives and their (U.S. Patent No. 5908933). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5908933
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile