Patents Assigned to Microtrace, Inc.
  • System for retrospective identification and method of marking articles for retrospective identification
    Patent number: 6309690
    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.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: October 30, 2001
    Assignee: Microtrace, Inc.
    Inventors: Brian Brogger, William J. Kerns