Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4733102 | Phase angle regulated rectifier and pulse producing system | Kazutaka Tomimatsu | 1988-03-22 |
| 4629549 | Oxygen sensor | Takao Kojima, Hiroyuki Ishiguro, Tetsusyo Yamada | 1986-12-16 |
| 4624770 | Air-fuel ratio sensor | Tetsusyo Yamada, Takao Kojima, Hiroyuki Ishiguro | 1986-11-25 |
| 4498968 | Oxygen sensor | Tetsusyo Yamada | 1985-02-12 |
| 4450065 | Oxygen sensor | Tetsusyo Yamada | 1984-05-22 |