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:
Feb. 13, 2001
Filed:
Jun. 29, 1999
Applicant:
Inventors:
Michael G. Bramucci, Folsom, PA (US);
Carol M. McCutchen, Dickson, TN (US);
Vasantha Nagarajan, Wilmington, DE (US);
Stuart M. Thomas, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P 1/00 ; C12P 7/40 ; C12P 7/44 ; C12P 7/42 ; C12P 7/02 ;
U.S. Cl.
CPC ...
C12P 1/00 ; C12P 7/40 ; C12P 7/44 ; C12P 7/42 ; C12P 7/02 ;
Abstract
This invention relates to a biocatalytic process to produce terephthalic acid and isophthalic acid from p-xylene and m-xylene, respectively. Terephthalic acid has been prepared by oxidizing p-xylene with bacteria belonging to the genus Burkholderia. Conversion of p-xylene into terephthalic acid is accomplished by a single bacterial strain that produces all of the requisite enzymes. In addition, this invention relates to the preparation of isophthalic acid from a mixture of m- and p-xylene.