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:
Aug. 11, 1987
Filed:
Dec. 23, 1985
Applicant:
Inventors:
Robert A Pyles, Evansville, IN (US);
Patrick J Mulvey, Mt. Vernon, IN (US);
Assignee:
General Electric Company, Mt. Vernon, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210651 ;
Abstract
A process for separating cyclic oligomeric dihydric phenol carbonate from aromatic polycarbonate which comprises contacting a solution comprising a major amount of aromatic polycarbonate and a minor amount of cyclic oligomer with a semi-permeable membrane, and recovering a second solution which has passed through the said membrane, said second solution enriched in cyclic oligomer.