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. 11, 2008
Filed:
Jul. 21, 2006
Atsushi Izumi, Ibaraki, JP;
Yuta Ochiai, Ibaraki, JP;
Shinsuke Umegaki, Kawasaki, JP;
Tomo Iwamura, Yokohama, JP;
Makoto Suzuki, Tokyo, JP;
Hidetaka Sakurai, Tokyo, JP;
Shinji Yamaguchi, Tokyo, JP;
Atsushi Izumi, Ibaraki, JP;
Yuta Ochiai, Ibaraki, JP;
Shinsuke Umegaki, Kawasaki, JP;
Tomo Iwamura, Yokohama, JP;
Makoto Suzuki, Tokyo, JP;
Hidetaka Sakurai, Tokyo, JP;
Shinji Yamaguchi, Tokyo, JP;
Daiichi Pure Chemicals Co., Ltd., Tokyo, JP;
Daiichi Pharmaceutical Co., Ltd., Tokyo, JP;
Abstract
Noble crystal of 4-dimethylamino-4-stilbazolium tosylate (DAST) useful as an electro-optical element. A DAST crystal having a size effective for use as an electro-optical element is provided by a twin crystal of DAST. The twin crystal of DAST can be obtained according to a seed crystallization method or a slope crystal growing method.