Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6878354 | Catalyst and process for exhaust purification | Kenro Mitsuda, Minoru Satou, Hiroaki Sigeoka, Ryoji Nishiyama, Yuji Kishimoto +1 more | 2005-04-12 |
| 6755017 | Device for purifying exhaust gas of an internal combustion engine | Satoshi Wachi, Kenro Mitsuda, Kouji Hamano | 2004-06-29 |
| 6519932 | Exhaust gas purification apparatus and method for an internal combustion engine | Hirofumi Ohuchi, Satoshi Wachi, Tosiaki Yonekura | 2003-02-18 |
| 6505465 | Device for controlling an internal combustion engine | Yukiko Kanazawa, Kazuhiko Kawajiri, Takashi Yonezawa | 2003-01-14 |
| 6499474 | Air/fuel ratio control apparatus for internal combustion engine | Satoshi Wachi, Li H. Liu, Hiromichi Hisato | 2002-12-31 |
| 6345498 | Exhaust gas purifier for internal combustion engine | Tosiaki Yonekura, Satoshi Wachi, Hirofumi Ohuchi | 2002-02-12 |
| 6279537 | Air fuel ratio control apparatus for an internal combustion engine | Tosiaki Yonekura, Satoshi Wachi, Hirofumi Ohuchi | 2001-08-28 |
| 6199540 | Fuel control system for internal combustion engine | Ryoji Nishiyama, Hironori Matsumori | 2001-03-13 |
| 6109242 | Fuel control system for internal combustion engine | Ryoji Nishiyama, Hironori Matsumori | 2000-08-29 |
| 6076502 | Exhaust gas recirculation control system for internal combustion engines | Hironori Matsumori, Hirofumi Ohuchi, Wataru Fukui, Yoichi Kadota, Ryoji Nishiyama | 2000-06-20 |
| 6073611 | Control apparatus for internal combustion engine | Hirofumi Ohuchi, Hironori Matsumori, Wataru Fukui, Takeshi Kitao | 2000-06-13 |
| 6006727 | Fuel control system for internal combustion engine | Ryoji Nishiyama, Hironori Matsumori | 1999-12-28 |
| 5983862 | Combustion control system for internal combustion engine | Ryoji Nishiyama, Yoichi Kadota | 1999-11-16 |
| 5776032 | Clutch control device | Masahiko Kurishige | 1998-07-07 |
| 5724810 | Controlling apparatus for introduction air into an exhaust pipe of an internal combustion engine | Yasuhiko Hosoya, Toshiki Kuroda | 1998-03-10 |
| 5675968 | Secondary air control apparatus for exhaust gas purifier | Ryoji Nishiyama, Yasuhiko Hosoya, Toshiki Kuroda | 1997-10-14 |
| 5653106 | Exothermic heat generating apparatus | Ryoji Nishiyama, Hiroshi Kimura, Tsuneo Yumikura, Akira Doi, Yoshiaki Akase +1 more | 1997-08-05 |
| 5566547 | Controlling apparatus for introducing air into an exhaust pipe of an internal combustion engine | Yasuhiko Hosoya, Toshiki Kuroda | 1996-10-22 |
| 5493858 | Controlling apparatus for introduction air into exhaust pipe of internal combustion engine | Yasuhiko Hosoya, Toshiki Kuroda | 1996-02-27 |
| 5474045 | Engine control device | Akira Demizu, Masakazu Sugai, Hitoshi Inoue, Ryoji Nishiyama | 1995-12-12 |
| 5459998 | Apparatus for introducing fresh air into exhaust pipe of internal combustion engine for purification of exhaust gas | Yasuhiko Hosoya, Toshiki Kuroda | 1995-10-24 |
| 5435129 | Apparatus for controlling air feeding to exhaust pipe of internal combustion engine | Yasuhiko Hosoya, Toshiki Kuroda | 1995-07-25 |
| 5403245 | Control device for vehicular engine having an automatic transmission and its control method | Shinji Watanabe, Ryoji Nishiyama, Kohji Hasunaka, Hitoshi Inoue | 1995-04-04 |
| 5359975 | Control system for internal combustion engine | Ryoji Nishiyama, Hitoshi Inoue | 1994-11-01 |
| 5311853 | Exhaust gas cleaning device for an internal combustion engine | Akira Takahashi, Masashi Chino, Tohru Hashimoto, Mitsuhiro Miyake, Minoru Nishida | 1994-05-17 |