Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938778 | Composite hollow fiber type separation membranes processes for the preparation thereof and their use | Shuzo Ohyabu, Syuji Kawai, Takehiko Okamoto | 1990-07-03 |
| 4911846 | Fluid treating apparatus and method of using it | Hiroyuki Akasu, Rishichi Mimura, Takashi Yamauchi, Michio Kusachi | 1990-03-27 |
| 4664669 | Composite hollow fiber-type separation membranes, processes for the preparation thereof and their use | Shuzo Ohyabu, Syuji Kawai, Takehiko Okamoto | 1987-05-12 |