Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340480 | Polysulfone-based hollow fiber membrane and process for manufacturing the same | Takehiko Okamoto, Hiroyuki Akasu, Kensaku Komatsu | 1994-08-23 |
| 4874522 | Polysulfone hollow fiber membrane and process for making the same | Takehiko Okamoto, Akio Ohmory, Akinori Sueoka, Hiroyuki Akasu | 1989-10-17 |
| 4475973 | Method for production of a fluid separation module | Toshiaki Tanaka, Keisuke Nakagome, Koji Matsui | 1984-10-09 |