Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6516612 | Exhaust gas purification device for an engine and A/F ratio control for early activating a NOx trapping catalyst | Tarou Yokoi, Hirofumi Tsuchida, Keiji Okada | 2003-02-11 |
| 6173570 | Exhaust gas purification device for internal combustion engine | Hisashi Mitsumoto | 2001-01-16 |
| 6167695 | Method and system for diagnosing deterioration of NOx catalyst | Yasuyuki Itou, Hidetoshi Itou | 2001-01-02 |
| 6145305 | System and method for diagnosing deterioration of NOx-occluded catalyst | Yasuyuki Itou | 2000-11-14 |
| 6006718 | Cylinder direct injection spark-ignition engine | Hiroshi Miyakubo, Tsuyoshi Taniyama | 1999-12-28 |
| 4769381 | Nicorandil-containing preparation for injection | Mika Sanada, Naoki Matsuo, Yoshimitsu Iida, Yoshinori Matsuoka, Junko MATSUO | 1988-09-06 |
| 4668665 | Formulation of sucralfate | Kazuo Igusa, Toshichika Ogasawara | 1987-05-26 |