Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6374817 | Application of OP-AMP to oxygen sensor circuit | Kenneth P. DeGroot, Claude J. Baxter, Jr. | 2002-04-23 |
| 6360709 | Piston top geometry for optimized combustion | Dennis A. Soltis, Kenneth P. DeGroot, Joseph Jenkins, Philip S. Keller, Jeffrey Wayne Anderson | 2002-03-26 |
| 6357431 | Wave form fuel/air sensor target voltage | Kenneth P. DeGroot, Yi Cheng, Edward M Vuylsteke, Timothy A. Coatesworth, Jonathan F Rose +1 more | 2002-03-19 |
| 6318334 | Method for sparking engine cylinders after fuel shutdown for reduced emissions | Michael Reale, Thomas A. Larson, Kenneth P. DeGroot | 2001-11-20 |
| 6256981 | Fuel control system with multiple oxygen sensors | Raymond J. Sullivan, Kenneth P. DeGroot, Michael Reale | 2001-07-10 |
| 6253541 | Triple oxygen sensor arrangement | Raymond J. Sullivan, Kenneth P. DeGroot, Michael Reale | 2001-07-03 |
| 6236930 | Sensor output precision enhancement in an automotive control system | Kenneth P. DeGroot, Thomas A. Larson | 2001-05-22 |
| 6234153 | Purge assisted fuel injection | Kenneth P. DeGroot, Michael Reale, Raymond J. Sullivan, Dennis A. Soltis, Mark J. Duty | 2001-05-22 |
| 6173698 | Closed loop exhaust gas sensor fuel control audited by dynamic crankshaft measurements | Kenneth P. DeGroot, Jonathan F Rose | 2001-01-16 |
| 6085734 | Fuel multiplier transfer from dynamic crankshaft fueling control to oxygen sensor operation | Kenneth P. DeGroot, Gregory T. Weber, Jeremy Smith | 2000-07-11 |
| 6003494 | Spark advance modifier based on a fuel modifier | Kenneth P. DeGroot, Michael Reale, Raymond J. Sullivan, Dennis A. Soltis | 1999-12-21 |
| 5947088 | Acceleration enrichment based on a fuel modifier | Kenneth P. DeGroot, Michael Reale, Raymond J. Sullivan, Dennis A. Soltis | 1999-09-07 |
| 5935042 | Adaptive K-factor to improve stall-torque management | Christopher P. Thomas, Kathryn Wolfe, O. Kent Thiel, Howard W. Krausman | 1999-08-10 |
| 5645745 | Circuit and control method for electrically heating a catalyst | Larry R. Hartwick, Anson Lee, Jan S. Pyko | 1997-07-08 |
| 5542403 | Method of determining start of closed-loop fuel control for an internal combustion engine | Mark S. Borland | 1996-08-06 |