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:
Jul. 05, 2016
Filed:
Nov. 09, 2012
Dai Nippon Printing Co., Ltd., Tokyo, JP;
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
Abstract
The purpose of the invention is to obtain an anti-counterfeiting marker sheet that is inexpensive and with which authenticity can be assessed easily. The invention uses an anti-counterfeiting marker sheet () characterized in being provided with a substrate (), and multiple markers (), which are formed directly on the substrate () and the contour shape of which can be recognized by magnified examination. It is preferable that: the markers are not unevenly distributed but are irregularly disposed on the substrate; there are multiple marker () colors; and there are multiple types of shapes for the marker () contour shapes. It is also preferable that the minimum radius of curvature of the corners of the shapes formed when the markers () are viewed in plan view is 250 nm to less than 10 μm.