Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5058219 | Circulating water pool | Keiichi Nishimura, Yoshiro Moriya, Yukihiko Ueda | 1991-10-22 |
| 5054134 | Upper layer water flow type circulating water pool | Keiichi Nishimura, Yoshiro Moriya, Yukihiko Ueda | 1991-10-08 |
| 5027449 | Circulating water pool | Keiichi Nishimura, Yoshiro Moriya, Yukihiko Ueda | 1991-07-02 |
| 4979243 | Circulating water pool | Keiichi Nishimura, Yoshiro Moriya, Yukihiko Ueda | 1990-12-25 |