Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6012284 | Engine exhaust gas purifying system | Masakazu Tanaka, Tatsuo Sakai, Hiroyuki Usami | 2000-01-11 |
| 5765368 | Exhaust gas purification by gas reaction in exhaust catalyst | Toshiki Matsumoto | 1998-06-16 |
| 5765369 | Exhaust gas purifying apparatus | Masakazu Tanaka, Hiroshi Mori, Mamoru Mabuchi, Hiroyuki Usami | 1998-06-16 |
| 5761902 | Change-over valve unit for switching exhaust gas passages and exhaust gas purifying system | Hiroyuki Usami, Masakazu Tanaka, Hiroshi Mori, Mamoru Mabuchi, Tatsuo Sakai | 1998-06-09 |
| 5648050 | Metal carrier | Toshiki Matsumoto, Tetsuya Toyao, Tetsuya Nakamura, Shigeru Maehara, Hiromasa Aoki +4 more | 1997-07-15 |
| 5634333 | Exhaust pipe opening and closing apparatus | Masakazu Tanaka, Hiroyuki Usami, Mamoru Mabuchi, Tatsuo Sakai | 1997-06-03 |
| 5425436 | Automotive suspension control system utilizing variable damping force shock absorber | Eiji Teramura, Shuichi Matsumoto, Masatoshi Kuroyanagi | 1995-06-20 |