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. 20, 2010
Filed:
Jan. 06, 2006
Applicants:
Kenichi Makita, Mie, JP;
Toru Doi, Mie, JP;
Inventors:
Kenichi Makita, Mie, JP;
Toru Doi, Mie, JP;
Assignee:
Tosoh Corporation, Shunan-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 63/16 (2006.01); B05D 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A novel fumaric diester copolymer suitable for used in an optical material having excellent heat resistance and transparency is provided. The fumaric diester copolymer comprises a specific fumaric diester residue, and at least one (meth)acrylic ester residue unit selected from a specific (meth)acrylic ester residue unit having an oxetanyl group and a specific (meth)acrylic ester residue unit having a tetrahydrofurfuryl group, and has a number average molecular weight of from 1,000 to 500,000.