Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6910459 | HCCI engine with combustion-tailoring chamber | Ruonan Sun, Charles L. Gray, Jr. | 2005-06-28 |
| 6810838 | Individual cylinder coolant control system and method | — | 2004-11-02 |
| 6386154 | Pumped EGR system | Charles L. Gray, Jr. | 2002-05-14 |
| 5609131 | Multi-stage combustion engine | Charles L. Gray, Jr. | 1997-03-11 |
| 5579640 | Accumulator engine | Charles L. Gray, Jr. | 1996-12-03 |
| 5549087 | Combined cycle engine | Charles L. Gray, Jr. | 1996-08-27 |
| 5505527 | Anti-lock regenerative braking system | Charles L. Gray, Jr., Ronald M. Schaefer | 1996-04-09 |
| 5495912 | Hybrid powertrain vehicle | Charles L. Gray, Jr., Michael John Safoutin | 1996-03-05 |