Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4737325 | Composite semipermeable membrane and process for preparation thereof | Yoshiyasu Kamiyama, Noriaki Yoshioka | 1988-04-12 |
| 4619767 | Composite semipermeable membrane | Yoshiyasu Kamiyama, Noriaki Yoshioka | 1986-10-28 |
| 4612118 | Composite semipermeable membrane of polyamine and trianzine | Yoshiyasu Kamiyama | 1986-09-16 |
| 4475973 | Method for production of a fluid separation module | Toshiaki Tanaka, Ichiro Kawata, Koji Matsui | 1984-10-09 |