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:
Jan. 04, 1977
Filed:
Mar. 13, 1975
Applicant:
Inventors:
Dieter Freitag, Krefeld-Bockum, DT;
Ulrich Haberland, Krefeld-Bockum, DT;
Heinrich Krimm, Krefeld-Bockum, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 49 ;
Abstract
The subject matter of the invention relates to 1,4-bis-(4',4'-dihydroxy-triphenyl-methyl)-benzene and to plastics, in particular to branched polycarbonates, on the basis of this tetra-hydroxy-compound.