Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11112810 | Analog control loop with digital feedback | Steven B. Pirko | 2021-09-07 |
| 10550820 | Time-varying spark current magnitude to improve spark plug performance and durability | Luigi P. Tozzi, David Thomas Lepley, Maria-Emmanuella Sotiropoulou, Steven B. Pirko | 2020-02-04 |
| 9429132 | Capacitive ignition system with ion-sensing and suppression of AC ringing | David Thomas Lepley, Steven B. Pirko, Arno Gschirr | 2016-08-30 |
| 9027538 | Digital control of gaseous fuel substitution rate for dual-fuel engines | — | 2015-05-12 |
| 8978632 | Ion sensing method for capacitive discharge ignition | Peter Steinrueck, Gerhard Ranegger, Steven B. Pirko | 2015-03-17 |
| 8051702 | Vibration monitor | Richard D. Yohman, Thomas C. Wick | 2011-11-08 |
| 7699044 | Silicon-controlled rectifier shut-off circuit for capacitive discharge ignition system | — | 2010-04-20 |
| 7401603 | High tension capacitive discharge ignition with reinforcing triggering pulses | — | 2008-07-22 |
| 7203593 | Air starter and electronic control therefor | Gary A. Kleinfelder | 2007-04-10 |
| 6738244 | Annunciator | — | 2004-05-18 |
| 6701904 | Capacitive discharge ignition system with extended duration spark | — | 2004-03-09 |
| 6078130 | Spark plug with specific construction to avoid unwanted surface discharge | — | 2000-06-20 |
| 5623209 | Diagnostic system for capacitive discharge ignition system | Gary A. Kleinfelder | 1997-04-22 |
| 4777435 | Digital tachometer | Richard D. Yohman | 1988-10-11 |
| 4522184 | Silicon controlled rectifier shut-off circuit for capacitive discharge ignition system | — | 1985-06-11 |
| 4181883 | Hourmeter-tachometer | Bruce R. Beeghly | 1980-01-01 |