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. 12, 2003
Filed:
Mar. 15, 2002
Applicant:
Inventors:
Hidemi Takemoto, Iwakuni, JP;
Toru Sawaki, Iwakuni, JP;
Keiichi 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
An aromatic polycarbonate having excellent color is obtained by keeping an aromatic dihydroxy compound and a carbonic acid diester which are raw materials for the production of an aromatic polycarbonate in consideration of the influences of storage atmosphere, temperature, temperature difference from a storage tank and residence time.
Takemoto, Hidemi. (2003). Method for producing an aromatic polycarbonate and method of keeping raw materials thereof (U.S. Patent No. 6605686). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6605686
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile