Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4993481 | Thermal storage unit | Yoshiyuki Abe, Yoshio Takahashi, Ryuji Sakamoto, Kotaro Tanaka, Akira Negishi +3 more | 1991-02-19 |
| 4463799 | Heat storage medium for latent heat thermal energy storage unit | Yoshio Takahashi, Takeo Ozawa, Ryuji Sakamoto, Katsuhiko Kanari | 1984-08-07 |