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:
Nov. 22, 2011
Filed:
Nov. 12, 2007
Applicants:
Yasuyuki Kajita, Chiba, JP;
Hirofumi Morita, Chiba, JP;
Inventors:
Yasuyuki Kajita, Chiba, JP;
Hirofumi Morita, Chiba, JP;
Assignee:
Mitsui Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 18/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical polyurethane resin composition contains a polyisocyanate component including at least one cyclic polyisocyanate selected from the group consisting of alicyclic polyisocyanates, aralkyl polyisocyanates, and modified compounds thereof; and a polyol component having an average hydroxyl value of 280 to 1240 mg KOH/g and an average functionality of more than 2 and less than 5.