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:
Jul. 09, 2002
Filed:
Feb. 23, 2001
Applicant:
Inventors:
Sarita Chauhan, Landenberg, PA (US);
Robert DiCosimo, Rockland, DE (US);
Robert D. Fallon, Elkton, MD (US);
John E. Gavagan, Wilmington, DE (US);
Mark S. Payne, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours & Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P 7/40 ;
U.S. Cl.
CPC ...
C12P 7/40 ;
Abstract
The present invention relates to a method for producing &agr;-hydroxy acids using an enzyme catalyst having nitrilase activity. More specifically, the invention pertains to use of 72W (ATCC 55746) nitrilase to hydrolyze glycolonitrile to glycolic acid. Glycolonitrile is reacted in an aqueous mixture with a catalyst having 72W nitrilase activity to give glycolic acid selectively, and at high concentration and high yield.