Issued Patents All Time
Showing 25 most recent of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637191 | Method and system for diagnosing a secondary air supply for an internal combustion engine | Gregory Ziemba | 2003-10-28 |
| 6581371 | Engine catalyst monitor | Michael James Uhrich, Theodore M. Kostek | 2003-06-24 |
| 6564543 | System and method for monitoring a conditioning catalyst | Michael James Uhrich, Theodore M. Kostek | 2003-05-20 |
| 6453663 | NOx sensor monitoring | Michele Reichenbach, Timothy Joseph Clark, William Najib Mansur | 2002-09-24 |
| 6024075 | Engine control system with exhaust gas recirculation and method for determining proper functioning of the EGR system in an automotive engine | David Karl Bidner, Jonathan D. Mehl, Ian J. Czaja | 2000-02-15 |
| 5823171 | Engine control system for an engine coupled to a fuel vapor recovery | David George Farmer, Gopichandra Surnilla | 1998-10-20 |
| 5765541 | Engine control system for a lean burn engine having fuel vapor recovery | David George Farmer, Gopichandra Surnilla | 1998-06-16 |
| 5735255 | Engine control system for a lean burn engine having fuel vapor recovery | David George Farmer, Gopichandra Surnilla | 1998-04-07 |
| 5706793 | Method and system for monitoring fuel delivery of an engine | David Karl Bidner | 1998-01-13 |
| 5653102 | Air/fuel control system with catalytic converter monitoring for a variable displacement engine | Glenn A. Zimlich, David Karl Bidner | 1997-08-05 |
| 5617829 | Method for maintaining clean spark plugs in a variable displacement engine | David Karl Bidner, Glenn A. Zimlich | 1997-04-08 |
| 5522219 | Exhaust system with bypass catalytic converter and diagnostics | Glenn A. Zimlich | 1996-06-04 |
| 5404718 | Engine control system | Tri T. Truong, David George Farmer | 1995-04-11 |
| 5386693 | Engine air/fuel control system with catalytic converter monitoring | — | 1995-02-07 |
| 5385016 | Air/fuel control system responsive to duo upstream EGO sensors with converter monitoring | Glenn A. Zimlich, Tri T. Truong | 1995-01-31 |
| 5381656 | Engine air/fuel control system with catalytic converter monitoring | Glenn A. Zimlich, Tri T. Truong | 1995-01-17 |
| 5363646 | Engine air/fuel control system with catalytic converter monitoring | Glenn A. Zimlich, Tri T. Truong | 1994-11-15 |
| 5357751 | Air/fuel control system providing catalytic monitoring | — | 1994-10-25 |
| 5353592 | Engine air/fuel control with monitoring | Glenn A. Zimlich, Tri T. Truong | 1994-10-11 |
| 5325836 | Flexible fuel control system with fuel transit delay compensation | William Edward Boruta, Judith M. Curran | 1994-07-05 |
| 5321978 | Method and apparatus for detecting cylinder misfire in an internal combustion engine | Arnold W. Brandt, Jeffrey Koncsol | 1994-06-21 |
| 5245978 | Control system for internal combustion engines | — | 1993-09-21 |
| 5228421 | Idle speed control system | — | 1993-07-20 |
| 5224462 | Air/fuel ratio control system for an internal combustion engine | — | 1993-07-06 |
| 5215055 | Idle speed and fuel vapor recovery control system | — | 1993-06-01 |