Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759827 | Oxygen concentration detection apparatus with an adjusting device and its adjusting method | Yasushi Okada, Toshiyuki Mieno, Nobuyuki Oono | 1988-07-26 |
| 4741311 | Method of air/fuel ratio control for internal combustion engine | Yasushi Okada, Toshiyuki Mieno, Nobuyuki Oono | 1988-05-03 |
| 4724814 | System of abnormality detection for oxygen concentration sensor | Toshiyuki Mieno, Yasushi Okada, Nobuyuki Oono | 1988-02-16 |
| 4724815 | System of abnormality detection for oxygen concentration sensor | Toshiyuki Mieno, Yasushi Okada, Nobuyuki Oono | 1988-02-16 |
| 4723521 | Air/fuel ratio control system for an internal combustion engine | Toshiyuki Mieno, Yasushi Okada, Nobuyuki Oono | 1988-02-09 |
| 4722779 | Air/fuel ratio sensor | Tetsusyo Yamada, Nobuhiro Hayakawa, Kazunori Yokota, Keiichi Hayashi, Yasushi Okada | 1988-02-02 |
| 4721088 | Method for controlling an oxygen concentration detection apparatus with a heater element | Toshiyuki Mieno, Yasushi Okada, Nobuyuki Oono | 1988-01-26 |
| 4719895 | Method for controlling an oxygen concentration sensor | Toshiyuki Mieno, Yasushi Okada, Nobuyuki Oono | 1988-01-19 |
| 4689136 | Oxygen sensor assembly | Toshiyuki Mieno | 1987-08-25 |
| 4683049 | Oxygen sensor assembly | Toshiyuki Mieno | 1987-07-28 |
| 4539967 | Duty ratio control method for solenoid control valve means | Kiyohisa Tomono | 1985-09-10 |
| 4513713 | Method of controlling operating amounts of operation control means for an internal combustion engine | Takashi Koumura | 1985-04-30 |
| 4505246 | Method for operating a closed loop air/fuel ratio control system of an internal combustion engine | Takehiko Hosokawa | 1985-03-19 |
| 4466411 | Air/fuel ratio feedback control method for internal combustion engines | Shumpei Hasegawa | 1984-08-21 |
| 4448177 | Exhaust gas recirculation control system having variable valve lift correcting speed for exhaust gas recirculation valve | Shumpei Hasegawa, Takashi Koumura, Junichi Miyake, Junichi Kimura | 1984-05-15 |