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. 21, 1999
Filed:
Nov. 14, 1997
Raymond R Gosselin, Stillwater, MN (US);
Thomas M Spielbauer, Oakdale, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A color changeable device that has been partially activated. The device comprises a flexible substrate with a first major surface and a second major surface and an interference color generating laminate on the first major surface. The color generating laminate comprises a first layer and a second layer in intimate contact. When the first and second layers are in intimate contact, the laminate generates an interference color. When the first and second layers are not in intimate contact, the laminate does not generate the interference color. The substrate and laminate include a first permanent deformation causing separation of the first and second layers at a first portion of the device while retaining the first and second layers in intimate contact at a second portion of the device. The device is particularly useful for confirming the authenticity of an article without having to remove the color change device from the article.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile