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. 22, 2011
Filed:
Sep. 05, 2006
Masachika Watanabe, Tokyo-To, JP;
Masanori Umeya, Tokyo-To, JP;
Minoru Azakami, Tokyo-To, JP;
Tsuyoshi Yamauchi, Tokyo-To, JP;
Koji Eto, Tokyo-To, JP;
Masachika Watanabe, Tokyo-To, JP;
Masanori Umeya, Tokyo-To, JP;
Minoru Azakami, Tokyo-To, JP;
Tsuyoshi Yamauchi, Tokyo-To, JP;
Koji Eto, Tokyo-To, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
An object of the present invention is to provide an authenticity indicator that cannot be easily forged, that is clearly distinguishable, and that can be elaborately designed. An authenticity indicatoris in the form of a sheet and can be checked for its authenticity by observing the light reflected from it. The authenticity indicator comprises a first reflective layercomprising a reflective areathat reflects specified light, and a second reflective layerthat reflects specified light. The reflective area of the first reflective layer has a cholesteric liquid crystalline structure. The second reflective layer comprises a volume hologram.