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:
Sep. 18, 2018
Filed:
Apr. 21, 2015
Nitto Denko Corporation, Osaka, JP;
Tao Gu, San Diego, CA (US);
Bogumila Rachwal, Oceanside, CA (US);
Ozair Siddiqui, Murrieta, CA (US);
Stanislaw Rachwal, Oceanside, CA (US);
Isamu Kitahara, San Diego, CA (US);
Sergey Simavoryan, San Diego, CA (US);
Peng Wang, San Diego, CA (US);
Michiharu Yamamoto, San Jose, CA (US);
Nitto Denko Corporation, Osaka, JP;
Abstract
Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.