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. 31, 1993
Filed:
Sep. 04, 1992
Applicant:
Inventors:
Toshihiro Yamamoto, Kawasaki, JP;
Masao Kimura, Kawasaki, JP;
Assignees:
Nippon Steel Chemical Co., Ltd., Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525148 ; 525146 ;
Abstract
Heat-resistant resin compositions with an excellent pearly luster of this invention consist essentially of polycarbonates prepared from bisphenol A or its derivatives of the following general formula (I) ##STR1## in which R is hydrogen, a halogen, or a lower alkyl group and methyl methacrylate-.alpha.-methylstyrene copolymers with a weight average molecular weight of 30,000 to 200,000 and are useful for molding industrial articles requiring heat resistance.