Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699252 | Error correction in measures of speed, acceleration, misfire detection and roughness | Jeffrey S. Armfield | 1997-12-16 |
| 4843870 | Cylinder-by-cylinder engine pressure and pressure torque waveform determination utilizing crankshaft speed fluctuations | John O'Higgins | 1989-07-04 |
| 4807151 | Electrical technique for correcting bridge type mass air flow rate sensor errors resulting from ambient temperature variations | — | 1989-02-21 |
| 4697561 | On-line engine torque and torque fluctuation measurement for engine control utilizing crankshaft speed fluctuations | — | 1987-10-06 |
| 4532592 | Engine-performance monitor and control system | William P. Mihelc | 1985-07-30 |