Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4453952 | Oxygen absorbent and process for the separation of oxygen and nitrogen using the same | Jun Izumi, Hiroyuki Tsutaya, Masayoshi Kubo, Kenichi Maehara | 1984-06-12 |
| 4431432 | Process and apparatus for separating a mixed gas such as air | Masayoshi Kubo, Kenichi Maehara, Jun Izumi, Hiroyuki Tsutaya | 1984-02-14 |