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, Yosinori Akiyama | 1998-11-03 |
| 5729189 | Positive TCR thermistor device having surface roughness and filling oil for high heat transfer characteristics | Yasuhiro Oya, Keiichi Yamada, Naoto Miwa | 1998-03-17 |
| 5354969 | Positive-temperature-coefficient thermistor heating device and process for production of the same | Yosinori Akiyama, Akio Nara, Hidetaka Hayashi, Yasuhiro Oya, Keiichi Yamada | 1994-10-11 |