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. 10, 1991
Filed:
Jun. 12, 1989
Applicant:
Inventor:
Alberto Petri, Milan, IT;
Assignee:
Enichem Tecnoresine S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528202 ; 528125 ; 528128 ; 528171 ; 528174 ; 528176 ; 528191 ; 528193 ; 528203 ; 528204 ;
Abstract
Thermoplastic branched polycarbonates of high molecular weight and which possess flame-resistant (self-extinguishing) properties are provided wherein said polycarbonates contain in addition to carbonate units, units derived from a dihydroxyaromatic compound, units derived from a halogenated triphenyl compound and units derived from a polyfunctional organic branching agent.