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:
Nov. 28, 1989
Filed:
Jul. 13, 1988
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 ; 528199 ; 528204 ;
Abstract
Thermoplastic, branched, high-molecular weight polycarbonates endowed with properties of flame-resistance (self-extinguishing polycarbonates) are characterized by the presence in their polymeric chain of units deriving from a di-hydroxy-aromatic compound having the formula: ##STR1## wherein: R is a single bond; or is a substituted or non-substituted, linear or branched alkyl group containing from 1 to 5 carbon atoms; or is a group selected from O, S, SO.sub.2, CO;