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:
Dec. 02, 2003
Filed:
Mar. 22, 2002
Applicant:
Inventors:
Robert Edgar Colborn, Niskayuna, NY (US);
David Bruce Hall, Ballston Lake, NY (US);
Peter Koch, Frankfurt, DE;
Gerald Oeckel, Frankfurt, DE;
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07C 5/116 ; C07C 5/1255 ;
U.S. Cl.
CPC ...
C07D / ; C07D / ; C07C 5/116 ; C07C 5/1255 ;
Abstract
A method for the manufacture of chlorophthalic acid by liquid phase oxidation of chloro-ortho-xylene is disclosed. The chlorophthalic acid may be dehydrated to form chlorophthalic anhydride which is useful in the synthesis of polyetherimide.