Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391219 | Method for the separation and concentration of gas using a composite or asymmetric fluorine-containing polyimide membrane | Kenji Matsumoto | 1995-02-21 |
| 5178940 | Composite or asymmetric fluorine-containing polyimide membrane, a process for manufacturing the same and a method for the separation and concentration of gas using the same | Kenji Matsumoto | 1993-01-12 |
| 5165963 | Composite or asymmetric fluorine-containing polyimide membrane, a process for manufacturing the same and a method for the separation and concentration of gas using the same | Kenji Matsumoto | 1992-11-24 |