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:
Apr. 02, 2013
Filed:
May. 14, 2008
Nobuaki Komatsu, Tokyo, JP;
Shin-ichiro Nanjo, Tokyo, JP;
Nobuaki Komatsu, Tokyo, JP;
Shin-ichiro Nanjo, Tokyo, JP;
Abstract
A structure of a subject such as a card, a bank note, or a stock certificate easily faked and needing authenticity validation and a method for judging the authenticity of the subject. An authenticity validation chip having structural color developers irregularly arranged is attached to a card. An optical sensor detects the arrangement of the structural color developers to individually recognize the card or judge its authenticity. To validate the authenticity, when or after the card is taken in, the information in the authenticity validation chip provided on the card is read. Each of the structural color developers is a transparent resin flake or a transparent resin thin layer. The information is read two-dimensionally with a camera, and the authenticity of the authenticity validation chip is judged by observing the distributed state of the structural color developers. Alternatively, the information can be read linearly. A given straight or curved line can be used by altering the read portion while associating the shape of the read line with the movement of the card in taking in the card.