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:
Mar. 11, 1980
Filed:
Jun. 20, 1977
Applicant:
Inventor:
Goetz E Hardtmann, Morristown, NJ (US);
Assignee:
Sandoz, Inc., E. Hanover, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
424258 ; 546155 ; 546 90 ;
Abstract
Anti-allergic 4-hydroxy-3-nitro-quinoline-2(1H)-ones are prepared by reacting an isatoic anhydride with the carbanion resulting from the treatment of nitro acetic acid alkyl esters with a proton abstracting agent.