Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816237 | Process for purifying argon gas and apparatus used therefor | Shunsuke Nogita, Kazuo Someya | 1989-03-28 |
| 4746332 | Process for producing high purity nitrogen | Tetsuro Haga, Shunsuke Nogita, Kiyoshi Ichihara, Takazumi Ishizu | 1988-05-24 |
| 4737167 | Method and apparatus for separating gas mixture | Misayo Ohtani, Shunsuke Nogita, Kazuo Someya | 1988-04-12 |
| 4623524 | Process and apparatus for recovering inert gas | Kazuo Someya, Osamu Kita | 1986-11-18 |