Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4741311 | Method of air/fuel ratio control for internal combustion engine | Toyohei Nakajima, Toshiyuki Mieno, Nobuyuki Oono | 1988-05-03 |
| 4724815 | System of abnormality detection for oxygen concentration sensor | Toshiyuki Mieno, Toyohei Nakajima, Nobuyuki Oono | 1988-02-16 |
| 4724814 | System of abnormality detection for oxygen concentration sensor | Toshiyuki Mieno, Toyohei Nakajima, Nobuyuki Oono | 1988-02-16 |
| 4723521 | Air/fuel ratio control system for an internal combustion engine | Toshiyuki Mieno, Toyohei Nakajima, Nobuyuki Oono | 1988-02-09 |
| 4722779 | Air/fuel ratio sensor | Tetsusyo Yamada, Nobuhiro Hayakawa, Kazunori Yokota, Keiichi Hayashi, Toyohei Nakajima | 1988-02-02 |
| 4721088 | Method for controlling an oxygen concentration detection apparatus with a heater element | Toshiyuki Mieno, Toyohei Nakajima, Nobuyuki Oono | 1988-01-26 |
| 4719895 | Method for controlling an oxygen concentration sensor | Toshiyuki Mieno, Toyohei Nakajima, Nobuyuki Oono | 1988-01-19 |
| 4702816 | Oxygen concentration detection system | Kenshiro Hashimoto | 1987-10-27 |
| 4698209 | Device for sensing an oxygen concentration in gaseous body with a source of pump current for an oxygen pump element | Kenshiro Hashimoto | 1987-10-06 |
| 4660161 | Correction method for vehicle-mounted geomagnetic field sensors | — | 1987-04-21 |
| 4468581 | Drive circuit for a piezoelectric resonator used in a fluidic gas angular rate sensor | Fumitaka Takahashi, Katsutoshi Tagami | 1984-08-28 |
| 4183203 | Electronic timepiece time zone display | Shuji Maezawa | 1980-01-15 |