Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6596137 | Bipolar membrane | Satoshi Nago | 2003-07-22 |
| 5415751 | Method of producing acids and alkalis | Hiroyuki Adachi | 1995-05-16 |
| 5221455 | Bipolar membrane and method for its production | Koki Hirayama, Nobuhiko Ohmura, Shinsuke Tanaka | 1993-06-22 |
| 4923611 | Novel anion-exchange membrane | Nobuhiko Ohmura, Koki Hirayama | 1990-05-08 |