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:
May. 07, 2013
Filed:
Apr. 23, 2009
Applicants:
Noriyuki Kato, Tokyo, JP;
Shu Yoshida, Tokyo, JP;
Toshiaki Yamada, Tokyo, JP;
Jun Hagiwara, Tokyo, JP;
Inventors:
Noriyuki Kato, Tokyo, JP;
Shu Yoshida, Tokyo, JP;
Toshiaki Yamada, Tokyo, JP;
Jun Hagiwara, Tokyo, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polycarbonate resin having at least one terminal group which is represented by formula (1), and a resin composition and an optical material comprising the polycarbonate resin are disclosed. In the formula, R-Reach independently represent a hydrogen atom, halogen atom or an alkyl group. Xrepresents a direct bond or alkylene group.