Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816237 | Process for purifying argon gas and apparatus used therefor | Shunsuke Nogita, Kazuo Someya | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816237 | Process for purifying argon gas and apparatus used therefor | Shunsuke Nogita, Kazuo Someya | 1989-03-28 |