Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598712 | Latent heat accumulation system | Yutaka Watanabe, Katsuya Yamashita, Sanae Sekita, Tsuyoshi Noma | 1997-02-04 |
| 5481882 | Latent heat accumulation system | Yutaka Watanabe, Katsuya Yamashita, Sanae Sekita, Tsuyoshi Noma | 1996-01-09 |