Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996020 | A system for restraining diffusion of tritium | Ryuhei Kawabe | 1991-02-26 |
| 4938662 | Mechanical pump equipment | Kotaro Inoue, Yojiro HAYASHI, Yasuo Tachi, Ryuhei Kawabe, Yoshihiko Sato | 1990-07-03 |
| 4893792 | Cold trap | Kiyomitsu Nemoto, Norikatsu Yokota, Yoshihiko Sato, Kenji Mokuya, Hiroshi Haino | 1990-01-16 |
| 4259861 | Method and apparatus for determining whether a fluid is leaking | Hajime Yamamoto | 1981-04-07 |