Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12420848 | Methods and systems for achieving vital ultra-wideband (UWB) based train control | Richard C. Carlson, John Albert Plutt, Jr. | 2025-09-23 |
| 12397832 | Rail vehicle signal enforcement and separation control | Richard C. Carlson, Marc W. Cygnus | 2025-08-26 |
| 12379479 | Methods and systems for ultra-wideband (UWB) based subway personnel detection | — | 2025-08-05 |
| 12258058 | Rail vehicle signal enforcement and separation control | Richard C. Carlson, Marc W. Cygnus | 2025-03-25 |
| 12122436 | Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network | Richard C. Carlson, Sara Jo Woitel | 2024-10-22 |
| 11965952 | Methods and systems for ultra-wideband (UWB) based subway personnel detection | — | 2024-04-23 |
| 11952028 | Methods and systems for achieving vital ultra-wideband (UWB) based train control | Richard C. Carlson, John Albert Plutt, Jr. | 2024-04-09 |
| 11814088 | Vehicle host interface module (vHIM) based braking solutions | Peter Strezev | 2023-11-14 |
| 11780481 | Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network | Richard C. Carlson, Sara Jo Woitel | 2023-10-10 |
| 11700075 | Methods and systems for decentralized rail signaling and positive train control | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus | 2023-07-11 |
| 11492027 | Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network | Richard C. Carlson, Sara Jo Woitel | 2022-11-08 |
| 11349589 | Methods and systems for decentralized rail signaling and positive train control | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus | 2022-05-31 |
| 10926783 | Worker protection system | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus, Peter Strezev, John Albert Plutt, Jr. | 2021-02-23 |
| 10778363 | Methods and systems for decentralized rail signaling and positive train control | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus | 2020-09-15 |
| 10737709 | Worker protection system | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus, Peter Strezev, John Albert Plutt, Jr. | 2020-08-11 |
| 10336353 | Worker protection system | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus, Peter Strezev, John Albert Plutt, Jr. | 2019-07-02 |
| 10179595 | Worker protection system | Richard C. Carlson, Sara Jo Woitel, Marc W. Cygnus, Peter Strezev, John Albert Plutt, Jr. | 2019-01-15 |
| 9731738 | Rail vehicle signal enforcement and separation control | Richard C. Carlson, Marc W. Cygnus | 2017-08-15 |
| 9043131 | Collision avoidance system for rail line vehicles | Richard C. Carlson, Marc W. Cygnus | 2015-05-26 |
| 8812227 | Collision avoidance system for rail line vehicles | Richard C. Carlson, Marc W. Cygnus | 2014-08-19 |
| 8752797 | Rail line sensing and safety system | Richard C. Carlson, Peter Strezev, Marc W. Cygnus | 2014-06-17 |
| 8276498 | Ballistic shield system | Alan J. Hannibal | 2012-10-02 |
| 6563122 | Fluorescence detection assembly for determination of significant vegetation parameters | Wilhelm Lüdeker, Hans-Günter Dahn | 2003-05-13 |
| 6258933 | Process for the one-stage resalting and purification of oligopeptides | Franz Kunz, Karlheinz Drauz, Thomas Muller | 2001-07-10 |
| 5335698 | Method of restarting a loom after stoppage | Klaus Berktold, Anton Egloff | 1994-08-09 |