Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8181636 | Bi-fuel engine using hydrogen | Diana Brehob | 2012-05-22 |
| 7980220 | Staggered intake valve opening with bifurcated port to eliminate hydrogen intake backfire | Brad Alan Boyer, Hosuk Howard Jung | 2011-07-19 |
| 7487750 | Variable intake valve and exhaust valve timing strategy for improving performance in a hydrogen fueled engine | Thomas G. Leone, Brad Alan Boyer | 2009-02-10 |
| RE40439 | Method to control electromechanical valves | Diana Brehob, Eric Warren Curtis | 2008-07-22 |
| 7377267 | Injection strategy to maximize efficiency in gaseous engine | Brad Alan Boyer | 2008-05-27 |
| 7367312 | Control strategy to better usage of fuel in gaseous engine | Brad Alan Boyer | 2008-05-06 |
| 7258104 | Method and apparatus for controlling operation of dual mode HCCI engines | Jialin Young, Brad Alan Boyer, Kim Hwe Ku, Fang Shui | 2007-08-21 |
| 7117830 | System and method for direct injection of gaseous fuel into internal combustion engine | Brad Alan Boyer | 2006-10-10 |
| 7059114 | Hydrogen fueled spark ignition engine | Xiaoguo Tang, Joseph Robert Theis, Robert Jay Natkin, Siamak Hashemi | 2006-06-13 |
| 6805079 | Method to control electromechanical valves | Diana Brehob, Eric Warren Curtis | 2004-10-19 |
| 6779337 | Hydrogen fueled spark ignition engine | Xiaoguo Tang, Joseph Robert Theis, Robert Jay Natkin, Siamak Hashemi | 2004-08-24 |
| 6705261 | Multi-valve engine with gas exchange channel between inlet ports | Mohammad Haghgooie | 2004-03-16 |
| 6647947 | Strategy and control system for deactivation and reactivation of cylinders of a variable displacement engine | Bradley Alan Boyer, Thomas Megli | 2003-11-18 |
| 6609499 | Gaseous-fuel injection system and method | Daniel Michael Kabat, Xiaoguo Tang | 2003-08-26 |
| 6606982 | Crankcase ventilation system for a hydrogen fueled engine | Robert Jay Natkin, Lowell A. Reams | 2003-08-19 |
| 6561145 | Torque control method and system in an engine with a fully variable intake valve | Diana Brehob, John Curtis Hickey | 2003-05-13 |
| 6553962 | Exhaust valve deactivation and intake valve phasing to enable deceleration fuel shut off and engine braking | Stephen George Russ, Robert A. Stein | 2003-04-29 |
| 6516615 | Hydrogen engine apparatus with energy recovery | Donald Cameron Bingham, Robert Jay Natkin | 2003-02-11 |
| 6386156 | Transitions among operating modes in an engine with a hybrid valvetrain | Mazen Hammoud, Thomas G. Leone, Diana Brehob, John D. Russell | 2002-05-14 |
| 6382193 | Method of supercharging an engine | Bradley Alan Boyer | 2002-05-07 |
| 6360531 | System and method for reducing vehicle emissions | Timo A. Wiemero, Daniel Lawrence Meyer, Philip William Husak | 2002-03-26 |
| 6269793 | Internal combustion engine having deceleration fuel shut off and camshaft controlled charge trapping | Stephen George Russ | 2001-08-07 |
| 6237559 | Cylinder deactivation via exhaust valve deactivation and intake cam retard | Stephen George Russ, Robert A. Stein | 2001-05-29 |
| 6161521 | Internal combustion engine having deceleration fuel shut off and camshaft controlled charge trapping | Stephen George Russ | 2000-12-19 |
| 5934263 | Internal combustion engine with camshaft phase shifting and internal EGR | Stephen George Russ | 1999-08-10 |