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:
Dec. 04, 2012
Filed:
Oct. 18, 2007
Applicants:
Hidekazu Hoshino, Yokohama, JP;
Itsuo Takeuchi, Yokohama, JP;
Tokio Sakauchi, Yokohama, JP;
Suzushi Nishimura, Yokohama, JP;
Gorou Suzaki, Yokohama, JP;
Inventors:
Hidekazu Hoshino, Yokohama, JP;
Itsuo Takeuchi, Yokohama, JP;
Tokio Sakauchi, Yokohama, JP;
Suzushi Nishimura, Yokohama, JP;
Gorou Suzaki, Yokohama, JP;
Assignees:
NHK Spring Co., Ltd., Yokohama, JP;
Nippon Oil Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B42D 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An identification medium is to be observed via a linearly polarizing filter and includes a first liquid crystal layer that changes the wavelength of light according to the rotational angle of the linearly polarizing filter, a cholesteric liquid crystal layer, and a light absorbing layer that is provided below the cholesteric liquid crystal layer.