Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4299607 | Process for recovering nitrogen in low pressure type air separation apparatus | Shozi Koyama | 1981-11-10 |
| 4208199 | Process of and system for liquefying air to separate its component | Norio Nakazato, Norihide Saho, Sachihiro Yoshimatsu | 1980-06-17 |