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:
Sep. 15, 1998
Filed:
Jan. 31, 1997
Applicant:
Inventors:
Pin-pin Wu, Evanville, IN (US);
Farid F Khouri, Clifton Park, NY (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ;
U.S. Cl.
CPC ...
524108 ; 524369 ; 524375 ; 524378 ; 528494 ;
Abstract
Polycarbonate resins are freed of unreacted residues of the dihydric phenol reactants employed in their preparation by heating the resins in the presence of ortho esters or ortho carbonates.