Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8650088 | Methods and system for managing credit card usage in pre-paid printing system accounts | James Patrick VanWinckle, Charles Robert Carlson, Peter Charles Rapley, Shanti Villarreal, Christopher Dale Iburg | 2014-02-11 |
| 8542376 | Pre-paid document processing devices and operating methods | Charles Robert Carlson, James Patrick VanWinkle, Paul Ronald Herman, Shanti Villarreal, Brent R. Jones +2 more | 2013-09-24 |
| 8332332 | Methods and apparatus for managing pre-paid printing system accounts | Charles Robert Carlson, James Patrick VanWinkle, Paul Ronald Herman, Shanti Villarreal, Brent R. Jones +2 more | 2012-12-11 |