Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360434 | Amphoteric ion-permeable composite membrane | Takeyuki Kawaguchi, Yuzuru Hayashi, Shigeyoshi Hara, Fumio Ueda | 1982-11-23 |
| 4353802 | Semipermeable composite membrane | Shigeyoshi Hara, Yuzuru Hayashi, Takeyuki Kawaguchi, Noriaki Sasaki, Yutaka Taketani | 1982-10-12 |