Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938662 | Mechanical pump equipment | Shigehiro Shimoyashiki, Kotaro Inoue, Yojiro HAYASHI, Ryuhei Kawabe, Yoshihiko Sato | 1990-07-03 |
| 4389310 | Cold trap | Katsumi Seki, Yoji Shibata | 1983-06-21 |