Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9809454 | Method for refining hydrogen | Yoshinao Komiya, Toshio Akiyama, Yasuo Sato, Noboru Takemasa | 2017-11-07 |
| 9707507 | Oil removing device and ammonia purification apparatus using the same | Toshio Akiyama, Koichi Yada, Atsuya Makita | 2017-07-18 |