Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7204132 | Method for determining valve degradation | Thomas Megli, Vince Winstead | 2007-04-17 |
| 7128052 | System and method for exhaust heat generation using electrically actuated cylinder valves | Gopichandra Surnilla | 2006-10-31 |
| 6612162 | Method of determining cam phase angle | Jun Han, Louis Baumgartner | 2003-09-02 |
| 6393903 | Volumetric efficiency compensation for dual independent continuously variable cam phasing | Peter James Maloney, Jeffrey M. Pfeiffer | 2002-05-28 |
| 6308671 | Method of increasing torque and/or reducing emissions by varying the timing of intake and/or exhaust valves | Martin Muller, Edward George Himes, Bart Hubert Schreurs, Joon-Ho Yoo | 2001-10-30 |
| 5713341 | Lean air/fuel engine feedback control system | William Leisenring, Douglas R. Hamburg | 1998-02-03 |
| 5653104 | Engine air/fuel control system with adaptively alignment of a catalytic converter's peak efficiency window | Douglas R. Hamburg | 1997-08-05 |
| 5598703 | Air/fuel control system for an internal combustion engine | Douglas R. Hamburg | 1997-02-04 |
| 5582150 | Lean air/fuel control system for an internal combustion engine | Douglas R. Hamburg, Nicholas G. Zorka | 1996-12-10 |
| 5579746 | Engine lean air/fuel control system | Douglas R. Hamburg, Nicholas G. Zorka | 1996-12-03 |
| 5515826 | Engine air/fuel control system | Douglas R. Hamburg, Nicholas G. Zorka | 1996-05-14 |
| 5511526 | Engine air/fuel control with adaptive learning | Douglas R. Hamburg, Nicholas G. Zorka | 1996-04-30 |