Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104544 | Refining of a rare earth including a process for separation by a reverse osmosis membrane | Hiroshi Shimizu, Kenichi Ikeda | 1992-04-14 |
| 4737325 | Composite semipermeable membrane and process for preparation thereof | Noriaki Yoshioka, Keisuke Nakagome | 1988-04-12 |
| 4640773 | Membrane separation apparatus | Yuji Nishida, Koichi Okuno | 1987-02-03 |
| 4619767 | Composite semipermeable membrane | Noriaki Yoshioka, Keisuke Nakagome | 1986-10-28 |
| 4612118 | Composite semipermeable membrane of polyamine and trianzine | Keisuke Nakagome | 1986-09-16 |
| 4385084 | Process for preparing a selective permeable membrane | Akio Iwama, Yoshitaka Kazuse, Hisashi Ichinose | 1983-05-24 |