Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285645 | Regenerative type air conditioning equipment | Akira Yamada, Yasuo Koseki, Fumiaki Yatsuboshi, Hirokuni Mizuno | 1994-02-15 |
| 5018367 | Cooling energy generator with cooling energy accumulator | Akira Yamada, Isao Ohkouchi, Yasuo Koseki, Hideaki Kurokawa, Katsuya Ebara +2 more | 1991-05-28 |