Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12198474 | Voter and voting official authenticatable ballot and method | Noal Phillips | 2025-01-14 |
| 11978286 | Voter and voting official authenticatable ballot and method | Noal Phillips | 2024-05-07 |
| 8100562 | Device and system for an optical element holder | Michael Robert Gluszczak, Paul O. Ramstad, Stephen D. Smithson, Roy W. Lindahl | 2012-01-24 |
| 7740378 | Device and system for an optical element holder | Michael Robert Gluszczak, Paul O. Ramstad, Stephen D. Smithson, Roy W. Lindahl | 2010-06-22 |
| 7625613 | Copy-resistant security paper | Noal Phillips | 2009-12-01 |
| 6709018 | Security envelope detectable for foreign substances | — | 2004-03-23 |
| 6692030 | Security document with nano-pattern | — | 2004-02-17 |
| 6665406 | Variable density verification | — | 2003-12-16 |
| 6396927 | Variable density verification | — | 2002-05-28 |
| 6106021 | Security papers with unique relief pattern | — | 2000-08-22 |
| 6082775 | Chemically encoded security papers | — | 2000-07-04 |
| 5873604 | Document security system having thermo-activated pantograph and validation mark | — | 1999-02-23 |
| 5826916 | Visual validation mark for bank checks and other security documents | — | 1998-10-27 |
| 5772248 | Document with tamper and counterfeit resistant relief markings | — | 1998-06-30 |
| 5762378 | Tamper resistant validation marks | — | 1998-06-09 |
| 5704651 | Counterfeit resistant documents and methods | — | 1998-01-06 |
| 5695220 | Visual validation mark for bank checks and other security documents | — | 1997-12-09 |
| 5344192 | Visual validation mark for bank checks and other security documents | — | 1994-09-06 |