Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12287161 | Aluminum alloy heat exchanger | Tomohiro Shoji, Atsushi Fukumoto, Yoshiyuki Oya, Takahiro Shinoda, Koichi Nakashita +1 more | 2025-04-29 |
| 10302376 | Highly resistant copper tube against ant nest corrosion | Hirokazu TAMAGAWA, Yoshiyuki Oya | 2019-05-28 |