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:
Apr. 16, 2013
Filed:
Jan. 05, 2012
Applicants:
Satoshi Okada, Koriyama, JP;
Makoto Hasegawa, Tokyo, JP;
Hiroshi Kumai, Koriyama, JP;
Hiromichi Nagayama, Koriyama, JP;
Inventors:
Satoshi Okada, Koriyama, JP;
Makoto Hasegawa, Tokyo, JP;
Hiroshi Kumai, Koriyama, JP;
Hiromichi Nagayama, Koriyama, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/54 (2006.01); C07C 69/73 (2006.01); C08F 20/30 (2006.01); C09K 19/38 (2006.01); G02F 1/13 (2006.01); G11B 7/135 (2012.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides an optical anisotropic material having a good light stability, and provides a di(meth)acrylate compound represented by the following formula (1) and a polymerizable liquid crystalline composition that are suitable for the production of the optical anisotropic material. Further, the present invention provides an optical element having a good light stability and an optical information writing/reading device using the same.