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. 23, 2002
Filed:
Oct. 18, 2001
Applicant:
Inventors:
Wataru Funakoshi, Iwakuni, JP;
Yuichi Kageyama, Iwakuni, JP;
Hiroaki Kaneko, Iwakuni, JP;
Katsushi Sasaki, Iwakuni, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 6/400 ;
U.S. Cl.
CPC ...
C08G 6/400 ;
Abstract
A method for producing a high-quality thermoplastic branched polycarbonate which is used in blow-molding, extrusion or vacuum molding from a linear aromatic polycarbonate efficiently. The thermoplastic branched polycarbonate is produced by melt-mixing and reacting a substantially linear aromatic polycarbonate with an acid anhydride having at least two cyclic acid anhydride groups in a molecule in the presence of a basic catalyst.
Funakoshi, Wataru. (2002). Branched aromatic polycarbonate, and production method and blow-molded article thereof (U.S. Patent No. 6423813). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6423813
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile