Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9403118 | Nitrogen-enriched gas manufacturing method, gas separation method and nitrogen-enriched gas manufacturing apparatus | Makiya Kokubu | 2016-08-02 |
| 9359203 | Method for producing nitrogen gas, method for separating gas and device for producing nitrogen gas | Makiya Kokubu | 2016-06-07 |