Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7438746 | Off-gas feed method and target gas purification system | Toshihiko Sumida, Masanori Miyake | 2008-10-21 |
| 6913638 | Method for separating hydrogen gas | Toshihiko Sumida, Masanori Miyake | 2005-07-05 |
| 6663691 | Method of recovering enriched gaseous oxygen | Morihiko Yamamoto, Kazuo Haruna | 2003-12-16 |
| 5755856 | Process of recovering oxygen-enriched gas | Masanori Miyake, Kazuo Haruna | 1998-05-26 |