239000002131 composite material Substances 0.000 description 11.239000004800 polyvinyl chloride Substances 0.000 description 15.239000000969 carrier Substances 0.000 claims description 4.238000010023 transfer printing Methods 0.000 claims description 16.238000004519 manufacturing process Methods 0.000 claims abstract description 18.239000000758 substrate Substances 0.000 claims abstract description 31.238000007639 printing Methods 0.000 claims abstract description 82.Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Assignors: L-1 SECURE CREDENTIALING, INC. MERGER/CHANGE OF NAME Assignors: DIGIMARC CORPORATION Assigned to BANK OF AMERICA, N.A. reassignment L-1 SECURE CREDENTIALING, INC. Assignors: BI, DAOSHEN, JONES, ROBERT Publication of US20030173406A1 publication Critical patent/US20030173406A1/en Priority claimed from US10/941,059 external-priority patent/US7213757B2/en Priority claimed from US11/020,651 external-priority patent/US7694887B2/en Assigned to DIGIMARC CORPORATION reassignment DIGIMARC CORPORATION TRANSFER OF RIGHTS Assignors: DIGIMARC ID SYSTEMS, LLC Publication of US7063264B2 publication Critical patent/US7063264B2/en Application granted granted Critical Assigned to L-1 SECURE CREDENTIALING, INC. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US34468601P priority Critical Priority to US37133502P priority Priority to US42911502P priority Application filed by Digimarc Corp filed Critical Digimarc Corp Priority to US10/330,032 priority patent/US7063264B2/en Assigned to DIGIMARC ID SYSTEMS reassignment DIGIMARC ID SYSTEMS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Digimarc Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Daoshen Bi Robert Jones Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US10/330,032 Other versions US20030173406A1
Google Patents Covert variable information on identification documents and methods of making sameÄownload PDF Info Publication number US7063264B2 US7063264B2 US10/330,032 US33003202A US7063264B2 US 7063264 B2 US7063264 B2 US 7063264B2 US 33003202 A US33003202 A US 33003202A US 7063264 B2 US7063264 B2 US 7063264B2 Authority US United States Prior art keywords visible image light human eye panel Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7063264B2 - Covert variable information on identification documents and methods of making same US7063264B2 - Covert variable information on identification documents and methods of making same