Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12360174 | Inverter diagnostic testing methods and apparatus | Irving A. Gibbs, Gabriel Braga, Thomas Arthur Farr | 2025-07-15 |
| 12334850 | Control systems and methods for mitigating motor start-up instabilities in lightly loaded conditions near synchronous speed | Gabriel Braga | 2025-06-17 |
| 12113464 | Adjustable frequency drives using normalized modulation control signals to compensate for phase imbalance and methods of operating the same | Irving A. Gibbs, Geraldo Nojima, Thomas Arthur Farr, Gabriel Braga | 2024-10-08 |
| 12034395 | Apparatus and methods for reduced voltage starting of motors with bumpless force transition | Thomas Arthur Farr, Gabriel Braga | 2024-07-09 |
| 11967917 | Methods of braking motors and motor starters employing the same | — | 2024-04-23 |
| 11863091 | Motor voltage synthesis in reduced voltage soft starters and motor starters employing the same | — | 2024-01-02 |
| 11811345 | Methods of protecting motors driven by variable frequency drives and variable frequency drive systems employing the same | Thomas Arthur Farr, Donovan Gray | 2023-11-07 |
| 11677230 | Motor protection relay interface using magnetometer-based sensors | Thomas Arthur Farr, Hanning Tang | 2023-06-13 |
| 11300632 | Adjustable frequency drive systems and methods of employing power compensation | John David Maurin, Thomas Arthur Farr | 2022-04-12 |
| 11128240 | Reduced voltage soft starter apparatus and methods using current-controlled transitions | Hanning Tang, Benjamin Stewart Wells, Thomas Arthur Farr | 2021-09-21 |
| 10958188 | Bus voltage limiter for converter apparatus with multiple DC buses | — | 2021-03-23 |
| 10873270 | Converter apparatus using source-activated discharge circuits | John David Maurin, Thomas Arthur Farr | 2020-12-22 |
| 9680388 | System and method for starting a variable frequency drive with reduced arc flash risk | Irving A. Gibbs | 2017-06-13 |
| 9385638 | Regenerative rectifier for a motor control drive | — | 2016-07-05 |
| 7405498 | Multi-level active filter | Mukul Rastogi, Peter Willard Hammond | 2008-07-29 |