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.:

US 7108895 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 19, 2006

Filed:

Feb. 08, 2002
Applicants:

Osamu Yokokouji, Kanagawa, JP;

Tamon Tachibana, Kanagawa, JP;

Masaki Oiwa, Kanagawa, JP;

Kanetaka Shimizu, Kanagawa, JP;

Takeshi Koike, Kanagawa, JP;

Inventors:

Osamu Yokokouji, Kanagawa, JP;

Tamon Tachibana, Kanagawa, JP;

Masaki Oiwa, Kanagawa, JP;

Kanetaka Shimizu, Kanagawa, JP;

Takeshi Koike, Kanagawa, JP;

Assignee:

Seimi Chemical Co., Ltd., Chigasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/52 (2006.01);
U.S. Cl.
CPC ...
Abstract

It is to provide a liquid crystal composition containing at least one type of optically active compounds of the following formulae (1) to (4), and a liquid crystal electro-optical element excellent in display quality. In each formula, C* is asymmetric carbon, and the respective symbols are as defined in descriptionR-A-C*HX—Y-A-(Z-A)-C≡C-A-(Z-A)-R  (1)R-A-C*HX—Y-A-Z-A-Z-A-R  (2)R-Pn-C*HX—CH-A-Y-A-R  (3)


Find Patent Forward Citations

Yokokouji, Osamu. (2006). Liquid crystal composition containing an optically active compound and liquid crystal electro-optical element (U.S. Patent No. 7108895). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7108895

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