Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7873524 | Method and apparatus for monitoring and responding to land use activities | Robert Wenzlau | 2011-01-18 |
| 7831440 | Method and apparatus for monitoring and responding to land use activities | Robert Wenzlau | 2010-11-09 |
| 7747450 | Method and apparatus for monitoring and responding to land use activities | Robert Wenzlau | 2010-06-29 |
| 7187278 | Rule based proximity and time based tracking system | — | 2007-03-06 |
| 6397212 | Self-learning and self-personalizing knowledge search engine that delivers holistic results | — | 2002-05-28 |
| 6205435 | Self-contained payment system with circulating digital vouchers | — | 2001-03-20 |
| 6047269 | Self-contained payment system with circulating digital vouchers | — | 2000-04-04 |
| 5903880 | Self-contained payment system with circulating digital vouchers | — | 1999-05-11 |