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. 22, 1976
Filed:
Apr. 03, 1974
Applicant:
Inventor:
Richard V Norton, Wilmington, DE (US);
Assignee:
Sun Ventures, Inc., Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2605 / ; 260525 ;
Abstract
A process for removing iron contamination of aromatic carboxylic acids by oxidizing an aqueous solution of the ammonium salt of the acid to form insoluble iron compounds, separating the insoluble compounds, and converting the acid salt to free acid.