Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12069552 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel, Yousuf Kamal | 2024-08-20 |
| 12015969 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel | 2024-06-18 |
| 11836569 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel | 2023-12-05 |
| 11529977 | Radar enabled determination of presence, axle count, speed, and direction of a rail car | John Todd Elson, Nicolas Martinez, Richard Skotnicki | 2022-12-20 |
| 11450203 | RFID system with time slot interleaving | Kelly Gravelle, Karl Kelsey | 2022-09-20 |
| 11323865 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel, Yousuf Kamal | 2022-05-03 |
| 11288464 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2022-03-29 |
| 11039284 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel | 2021-06-15 |
| 10733393 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2020-08-04 |
| 10708745 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel, Yousuf Kamal | 2020-07-07 |
| 10467440 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2019-11-05 |
| 10302756 | System and method for estimating range to an RFID tag | John Todd Elson | 2019-05-28 |
| 10210752 | RFID system with time slot interleaving | Kelly Gravelle, Karl Kelsey | 2019-02-19 |
| 10134210 | Vehicle tracking system using smart-phone as active transponder | Kelly Gravelle, John Todd Elson, Greg Lantz, Paul Hamel, Yousuf Kamal | 2018-11-20 |
| 10083329 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2018-09-25 |
| 9841500 | System and method for estimating range to an RFID tag | John Todd Elson | 2017-12-12 |
| 9785804 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2017-10-10 |
| 9633238 | RFID system with time slot interleaving | Kelly Gravelle, Karl Kelsey | 2017-04-25 |
| 9396367 | System and method for synchronizing RFID readers utilizing RF or modulation signals | Michael Paul Gonzales, Kelly Gravelle | 2016-07-19 |
| 9361492 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2016-06-07 |
| 9316728 | System and method for estimating range to an RFID tag | John Todd Elson | 2016-04-19 |
| 9262656 | Multi-protocol RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2016-02-16 |
| 9135480 | Multi-protocol or multi command RFID system | Kelly Gravelle, Steven J. Catanach, Robert W. Tiernay, Joseph H. Kao | 2015-09-15 |
| 9081088 | System and method for estimating range to an RFID tag | John Todd Elson | 2015-07-14 |
| 8928462 | RFID system with time slot interleaving | Kelly Gravelle, Karl Kelsey | 2015-01-06 |