Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831251 | Heater unit having increased dielectric strength | Yasuhiro Oya, Keiichi Yamada, Yasuaki Tsujimura | 1998-11-03 |
| 5354969 | Positive-temperature-coefficient thermistor heating device and process for production of the same | Akio Nara, Hidetaka Hayashi, Yasuhiro Oya, Keiichi Yamada, Yasuaki Tsujimura | 1994-10-11 |
| 4651702 | Air-fuel mixture heating device for internal combustion engine | Akio Nara, Akio Yazawa | 1987-03-24 |