Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6557342 | Exhaust gas purifying system | Katsuo Suga, Maki Shimada, Hiroshi Akama, Motohisa Kamijo | 2003-05-06 |
| 6514905 | Exhaust gas purifying catalyst and method of producing same | Katsuo Suga | 2003-02-04 |