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. 26, 2009
Filed:
Feb. 27, 2004
Applicants:
Michiaki Fuji, Kyoto, JP;
Yoshimi Ito, Hofu, JP;
Inventors:
Michiaki Fuji, Kyoto, JP;
Yoshimi Ito, Hofu, JP;
Assignee:
Osaka Gas Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/00 (2006.01); C08G 63/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The aim of the invention is to stably provide a polyester polymer which has excellent transparency, mechanical and electric characteristics, and extremely low optical anisotropy and excellent moldability and size stability for engineering plastics, particularly suitable for optical materials. The above-mentioned problem can be achieved by a polyester polymer, obtainable from a dicarboxylic acid compound and a dihydroxy compound, and