Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957193 | Heat accumulator with agitating function | — | 1999-09-28 |
| 4410036 | Heat exchanger made of aluminum alloys and tube material for the heat exchanger | Yoshiharu Hasegawa, Hiroshi Kawase, Kazunori Ishikawa | 1983-10-18 |