Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9809454 | Method for refining hydrogen | Yoshinao Komiya, Satoshi Arakawa, Toshio Akiyama, Yasuo Sato | 2017-11-07 |
| 9433889 | Palladium alloy membrane unit, storage structure thereof, and method of purifying hydrogen by using the same | Yoshinao Komiya, Satoshi Arakawa, Toshio Akiyama, Yasuo Sato | 2016-09-06 |
| 5489327 | Process for purifying hydrogen gas | Kenji Otsuka | 1996-02-06 |
| 5294422 | Process for purification of rare gas | Koichi Kitahara, Kenji Ohtsuka, Shinobu Kamiyama | 1994-03-15 |
| 5194233 | Process for purification of rare gas | Koichi Kitahara, Kenji Ohtsuka, Shinobu Kamiyama | 1993-03-16 |