Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823658 | Exhaust gas purifying apparatus for an internal-combustion engine | Shigetaka Kuroda, Shinichi Kitajima, Katsuhiro Kumagai | 2004-11-30 |
| 6763707 | Failure determination system and method for internal combustion engine and engine control unit | Katsuhiro Kumagai, Shinichi Kitajima, Toshinari Shinohara, Kan Nakaune, Atsushi Matsubara | 2004-07-20 |
| 6739122 | Air-fuel ratio feedback control apparatus | Shinichi Kitajima, Asao Ukai, Shigetaka Kuroda | 2004-05-25 |
| 6698187 | Exhaust gas purifying apparatus for an internal-combustion engine | Atsushi Izumiura, Shinichi Kitajima, Shigetaka Kuroda | 2004-03-02 |