Lock Patents (Class 235/141)
  • Patent number: 8791793
    Abstract: A system and method are provided for reading and identifying molded products based on detecting intentionally introduced defects in the molded products that were included to identify and authenticate the molded products, or to confirm compatibility of the molded products in devices in which the molded products are installed for use. Process conditions in the fabrication or formation of melt processed parts are modified to deliberately introduce surface, detectable defects into the melt processed parts. A Quality Review (QR) code that specifies a compilation of at least some of the actual defects that are present in the molded part is provided, potentially encrypted, for comparison purposes.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: July 29, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventor: David Johnson