Patent Number: 6,309,690

Title: System for retrospective identification and method of marking articles for retrospective identification

Abstract: A system and method using microcoded marks provides retrospective identification of articles. An article is marked with microparticles having multiple layers. The particles form a unique spatial pattern on the article. An image is made of the mark as applied to the article. The digitized image is stored in a database with information about the article. The database can be accessed by users to verify the authenticity of an article.

Inventors: Brogger; Brian (Blaine, MN), Kerns; William J. (New Brighton, MN)

Assignee: Microtrace, Inc.

International Classification: A63B 45/00 (20060101); A63B 45/02 (20060101); G09F 3/00 (20060101); G07F 7/12 (20060101); G06K 19/06 (20060101); B05D 005/00 ()

Expiration Date: 10/30/2018