Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6211792 | Method and apparatus detecting a failed thyristor | Ivan Jadric, Gregory K. Beaverson | 2001-04-03 |
| 5923143 | Solid state motor starter with energy recovery | Muhammet Cosan, Kraig Bockhorst | 1999-07-13 |
| 5898554 | Switch driver circuit | Donald L. Tollinger, Frank E. Wills | 1999-04-27 |
| 5894736 | Methods and apparatuses for detecting surge in centrifugal compressors | Gregory K. Beaverson, Timothy M. Frank | 1999-04-20 |
| 5850160 | Gate drive circuit for an SCR | Dean K. Norbeck, Donald L. Tollinger | 1998-12-15 |
| 5838144 | Solid state, reduced voltage motor starter enabling equalized input/output volt-amp ratings | Frank E. Wills | 1998-11-17 |
| 5746062 | Methods and apparatuses for detecting surge in centrifugal compressors | Gregory K. Beaverson, Timothy M. Frank | 1998-05-05 |
| 5218283 | AC motor drive system with a two phase power supply | Frank E. Wills | 1993-06-08 |
| 5146147 | AC motor drive system | Frank E. Wills, Roy D. Hoffer | 1992-09-08 |
| 5136216 | AC motor drive system | Frank E. Wills, Roy D. Hoffer | 1992-08-04 |
| 5075838 | Energy efficient voltage snubber circuit | Frank E. Wills | 1991-12-24 |
| 4965658 | System for mounting and cooling power semiconductor devices | Dean K. Norbeck | 1990-10-23 |
| 4895005 | Motor terminal box mounted solid state starter | Dean K. Norbeck | 1990-01-23 |
| 4864487 | Control for three terminal power semiconductor devices | Frank E. Wills | 1989-09-05 |
| 4554463 | Trigger circuit for solid state switch | Dean K. Norbeck | 1985-11-19 |
| 4499534 | Control system for controlling an SCR network to regulate three-phase A-C power flow | Frank E. Wills, Dean K. Norbeck | 1985-02-12 |