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:
Oct. 05, 1976
Filed:
Nov. 27, 1973
Applicant:
Inventors:
Hans-Juergen Quadbeck-Seeger, Ludwigshafen, DT;
Peter Tonne, Neustadt, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
The production of unsubstituted or substituted isatoic anhydride by reaction of an alkali metal phthalamate with a hypohalite in the presence of bromine, iodine and/or a halogen amide or polymerization inhibitor. The products are starting materials for the production of dyes, plant protection agents and odorants.