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:
Mar. 18, 2014
Filed:
Feb. 24, 2010
Applicants:
Robert Ramirez, Mission Viejo, CA (US);
Shijun Zheng, San Diego, CA (US);
Zongcheng Jiang, Oceanside, CA (US);
Shuangxi Wang, Corona, CA (US);
Michiharu Yamamoto, Carlsbad, CA (US);
Inventors:
Robert Ramirez, Mission Viejo, CA (US);
Shijun Zheng, San Diego, CA (US);
Zongcheng Jiang, Oceanside, CA (US);
Shuangxi Wang, Corona, CA (US);
Michiharu Yamamoto, Carlsbad, CA (US);
Assignee:
Nitto Denko Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/00 (2006.01); C07D 491/00 (2006.01); C07D 498/00 (2006.01); C07D 513/00 (2006.01); C07D 515/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Compounds derived from aromatic tetracarboxyl bisbenzoimidazoles are disclosed. These compounds are capable of forming liquid crystal systems that can produce optically isotropic or anisotropic films with desirable optical properties. Formulae (I) or (II), or a salt thereof; wherein y is an integer in the range from 0 to about 4.