Issued Patents All Time
Showing 76–85 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209061 | Exhaust gas purification system for an internal combustion engine | — | 1993-05-11 |
| 5172550 | Control apparatus for an internal combustion engine | — | 1992-12-22 |
| 5155994 | Exhaust gas purification system for an internal combustion engine | Hideaki Muraki, Kiyohiko Oishi, Kenji Katoh | 1992-10-20 |
| 5141906 | Catalyst for purifying exhaust gas | Toshiaki Tanaka, Kiyohiko Oishi, Tokuta Inoue | 1992-08-25 |
| 5017538 | Catalyst for purifying exhaust gas and a method of producing the same | — | 1991-05-21 |
| 4934142 | Exhaust emission control device for a diesel engine | Kotaro Hayashi, Tokuta Inoue, Sumio Ito, Kiyoshi Kobashi | 1990-06-19 |
| 4916897 | Exhaust gas purifying apparatus built-in to a muffler for a diesel engine | Kotaro Hayashi, Tokuta Inoue, Sumio Ito, Kiyoshi Kobashi | 1990-04-17 |
| 4831821 | System for purifying exhaust gas from a diesel engine | — | 1989-05-23 |
| 4723973 | Purifying apparatus of a particulate trap-type for collecting particulates in exhaust gas from an engine | Kazuo Oyobe, Hiroki Hoshizaki, Terutaka Kageyama, Hirofumi Suzuki, Yoshihiko Imamura +2 more | 1988-02-09 |
| 4723069 | Ceramic heater | Hiroki Hoshizaki, Kazuo Oyobe, Hirofumi Suzuki, Nobuaki Kawahara, Terutaka Kageyama +4 more | 1988-02-02 |