Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5282450 | Engine power controller | Hiroyuki Itoyama | 1994-02-01 |
| 5119628 | Catalyst degradation diagnosing apparatus for air fuel ratio control system | Hideki Uema, Kohei Mitsuhashi, Yuki Nakajima | 1992-06-09 |
| 5050083 | System and method for controlling air/fuel mixture ratio for internal combustion engine | Hideki Uema, Fumio Yukawa, Kunifumi Sawamoto, Toyaki Nakagawa, Naoki Nakada | 1991-09-17 |
| 4951209 | Induction volume sensing arrangement for internal combustion engine or the like | Hatsuo Nagaishi, Hiroshi Sanbuichi, Hiromichi Miwa, Toshio Takahata, Yasuo Seimiya +1 more | 1990-08-21 |
| 4924836 | Air/fuel ratio control system for internal combustion engine with correction coefficient learning feature | Hideki Uema, Hiromichi Miwa, Yoshihisa Kawamura | 1990-05-15 |
| 4913122 | Air-fuel ratio control system | Shisei Kai | 1990-04-03 |
| 4901699 | System for controlling a fuel injection quantity and method therefor | Hiromichi Miwa, Yoshihisa Kawamura | 1990-02-20 |
| 4873641 | Induction volume sensing arrangement for an internal combustion engine or the like | Hatsuo Nagaishi, Yasuo Seimiya, Hideyuki Tamura, Hiromichi Miwa, Hiroshi Sanbuichi +1 more | 1989-10-10 |
| 4786476 | Gas sensor element using porously fired mass of titania | Fumio Munakata, Masayuki Touda, Fumio Yukawa | 1988-11-22 |
| 4503629 | System for collecting and conveying undersea mineral resources | — | 1985-03-12 |
| 4494374 | Air/fuel ratio monitoring system in IC engine using oxygen sensor | Tsuyoshi Kitahara, Kohki Sone | 1985-01-22 |
| 4471648 | Temperature control system | Shigeo Isitani, Kohki Sone | 1984-09-18 |
| 4464244 | Oxygen sensing device having solid electrolyte cell and means for supplying controlled current thereto | Shigeo Isitani | 1984-08-07 |
| 4440621 | System for detection of air/fuel ratio in IC engine by using oxygen sensor operated with supply of current | Tsuyoshi Kitahara, Kohki Sone | 1984-04-03 |
| 4439911 | Method of making an oxygen sensor | Kenji Ikezawa, Hiroshi Takao, Satoshi Ambe | 1984-04-03 |
| 4381753 | Evaporative emission control device of an internal combustion engine for vehicle use | Teruo Yuzawa | 1983-05-03 |
| 4366039 | Oxygen sensing device having means for control of current to produce reference oxygen partial pressure | Hidetoshi Kanegae, Shigeo Ishitani | 1982-12-28 |
| 4306957 | Device for producing control signal for feedback control of air/fuel ratio | Shigeo Ishitani, Shinji Kimura, Hiroshi Takao | 1981-12-22 |
| 4302312 | Device for producing control signal for feedback control of air/fuel mixing ratio | Shigeo Ishitani, Shinji Kimura, Hiroshi Takao | 1981-11-24 |
| 4192402 | Muffler for internal combustion engines | Takashi Nakagawa, Tadashi Sugiuchi, Kanau Iwashita | 1980-03-11 |
| 4182297 | Heat control system for a two-cycle engine | Yasuo Ikenoya | 1980-01-08 |