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. 01, 1983
Filed:
Jun. 15, 1970
Applicant:
Inventor:
Vincent P Kuceski, Chicago Heights, IL (US);
Assignee:
C. P. Hall Company, , US;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560204 ; 560191 ; 560193 ; 560198 ; 562528 ; 562529 ; 562530 ; 562540 ; 562549 ; 562590 ; 562593 ;
Abstract
Waste streams from adipic acid manufacture containing nitric, succinic, glutaric and adipic acids and valuable catalytic metal as salts are treated with alcohols, thereby separating, as esters, succinic and glutaric acids which would contaminate pure adipic acid on recycling, and allowing the re-use of the resulting stream containing nitric acid and metal catalytic salts.