Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7823799 | Heat-pump-type water heater | Kunio Sakai, Akira Konagai, Masahiko Sasaki | 2010-11-02 |
| 7454919 | Hot-water supply apparatus | Tomoaki Tanabe, Masaaki Sato, Masato Hori, Yoshiteru Yamazaki | 2008-11-25 |