Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840854 | Reinforced plate-like sintered bodies | Takao Kojima | 1989-06-20 |
| 4839018 | Air/fuel ratio detector | Sadao Ichikawa | 1989-06-13 |
| 4836906 | Air-fuel ratio sensor | Nobuhiro Hayakawa, Kazunori Yokota | 1989-06-06 |
| 4806739 | Plate-like ceramic heater | Takao Kojima, Hiroyuki Ishiguro, Yoshiki Kawachi | 1989-02-21 |