Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7037878 | Environmental control system including ozone-destroying catalytic converter having anodized and washcoat layers | Di-Jia Liu, Daniel R. Winstead | 2006-05-02 |
| 6855297 | NOx filter | Norman Van Den Bussche, James Williams, Roman Renneke, Robert Tom | 2005-02-15 |
| 6576199 | Environmental control system including ozone-destroying catalytic converter having anodized and washcoat layers | Di-Jia Liu, Daniel R. Winstead | 2003-06-10 |
| 6503462 | Smart air cleaning system and method thereof | Robert Tom, Karin Arnold | 2003-01-07 |