Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12259200 | Heat transfer plate and heat exchange element | Hajime Sotokawa, Xin Wang, Satoshi WAKITA | 2025-03-25 |
| 12188665 | Heat exchanging element and heat exchange ventilator | Tomoya Watanabe, Tsuyoshi TSUBOUCHI, Hajime Sotokawa, Kimikazu Hazumi | 2025-01-07 |