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. 07, 1998
Filed:
Mar. 25, 1997
Applicant:
Inventors:
Hussain Al Ghatta, Fiuggi, IT;
Sandro Cobror, Pozzilli, IT;
Assignee:
Sinco Engineering S.p.A., , IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08F / ;
U.S. Cl.
CPC ...
521182 ; 528298 ; 528302 ; 528308 ; 5283086 ; 525439 ; 525444 ; 521182 ;
Abstract
Concentrates of dianhydrides of tetracarboxylic acids in polycarbonate resins containing up to about 50% by weight of dianhydride. The concentrates can be added to aromatic polyester resins in the melt in quantities equivalent to contents of dianhydride from 0.05 to 2% by weight of the resin.