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:
Mar. 26, 2019
Filed:
May. 15, 2015
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Kengo Hirata, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
A polycarbonate copolymer includes a repeating unit A represented by a formula (1) below, chain ends of the PC copolymer being terminated by a monovalent aromatic group or a monovalent fluorine-containing aliphatic group. In the above formula (1), Ris a hydrogen atom or an alkyl group having 1 to 2 carbon atoms; an average repeating number n is in a range from 6 to 40 and L is an integer of 1 to 4; and when an aromatic ring is substituted by two or more of R(L≥2), the two or more of Rare the same or different from each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile