Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12113464 | Adjustable frequency drives using normalized modulation control signals to compensate for phase imbalance and methods of operating the same | Irving A. Gibbs, Stan Rex Simms, Thomas Arthur Farr, Gabriel Braga | 2024-10-08 |
| 12072367 | Hybrid switch for substation and other applications and methods of operating same | Eddie Wilkie | 2024-08-27 |
| 11901835 | Low inductance bus assembly and power converter apparatus including the same | — | 2024-02-13 |
| 11726130 | Hybrid switch for substation and other applications and methods of operating same | Eddie Wilkie | 2023-08-15 |
| 11632099 | Driver and sensor circuitry for power semiconductor switches using optical power supplies | — | 2023-04-18 |
| 11451227 | Control circuitry for power semiconductor switches using control signal feedback | Eddie Wilkie | 2022-09-20 |
| 11290088 | Drivers for paralleled semiconductor switches | — | 2022-03-29 |
| 11289294 | Rotary switch and circuit interrupter including the same | Steven Z. Chen, Robert P. Griffin, Koustubh Dnyandeo Ashtekar | 2022-03-29 |
| 11070140 | Low inductance bus assembly and power converter apparatus including the same | — | 2021-07-20 |
| 10985745 | Drivers for power semiconductor switches using device feedback | Eddie Wilkie | 2021-04-20 |
| 10903778 | Apparatus and methods for monitoring subsea electrical systems using adaptive models | — | 2021-01-26 |
| 10770887 | Semiconductor circuit interruption devices using current filtering to improve device coordination | — | 2020-09-08 |
| 10566964 | Apparatus and methods for overvoltage protection of electronic devices | — | 2020-02-18 |
| 10410813 | Vacuum switching apparatus and electrical contact therefor | Koustubh Dnyandeo Ashtekar, Steven Z. Chen, Robert P. Griffin | 2019-09-10 |
| 10050575 | Partitioned motor drive apparatus for subsea applications | Audun Magne Askeland | 2018-08-14 |
| 9673629 | High voltage direct current transmission and distribution system | Harry Broussard | 2017-06-06 |
| 9270119 | High voltage direct current transmission and distribution system | Harry Broussard | 2016-02-23 |
| 8655553 | Monitoring system and method for electric vehicle and electric vehicle supply equipment | William Edward Wilkie, II | 2014-02-18 |
| 8503180 | Variable frequency drive system apparatus and method for reduced ground leakage current and transistor protection | — | 2013-08-06 |
| 7834579 | Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level AC drive inverter bridge | — | 2010-11-16 |
| 7339803 | Inverter bridge short-circuit protection scheme | — | 2008-03-04 |
| 7110272 | Inverter bridge controller implementing short-circuit protection scheme | — | 2006-09-19 |
| 7050279 | Method and apparatus for high impedance grounding of medium voltage AC drives | — | 2006-05-23 |
| 6822866 | Microdrive | Oliver Fearing, Lyle T. Keister | 2004-11-23 |
| 6327124 | Low current ground fault relay | Oliver Fearing | 2001-12-04 |