Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5224028 | Method for defining pulse width modulation (PWM) waveform patterns to produce inverter outputs having a low harmonic content | — | 1993-06-29 |
| 5010470 | Current balancing structure for semiconductor switching devices | Douglas Gibbons Young | 1991-04-23 |
| 4975822 | Harmonic reduction for multi-bridge converters | — | 1990-12-04 |
| 4954726 | Switching an inverter with stored signal sequences | Douglas Gibbons Young | 1990-09-04 |
| 4953071 | Auxiliary excitation circuit for phased transformers | — | 1990-08-28 |
| 4922401 | Inverter circuit utilizing the reverse voltage capabilities of symmetrical gate turn off thyristors | — | 1990-05-01 |
| 4797186 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product | Alexander H. Levy | 1989-01-10 |
| 4792384 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product | Alexander H. Levy | 1988-12-20 |
| 4780187 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product | Alexander H. Levy | 1988-10-25 |
| 4778579 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product | Alexander H. Levy | 1988-10-18 |
| 4358820 | Inverter with individual commutation circuit | — | 1982-11-09 |
| 4266190 | Dual core magnetic amplifier sensor | — | 1981-05-05 |
| 4245290 | Sliding notch pulse width modulation (PWM) | — | 1981-01-13 |
| 4204264 | Harmonic cancellation for multi-bridge, three-phase converters | — | 1980-05-20 |