Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874522 | Polysulfone hollow fiber membrane and process for making the same | Takehiko Okamoto, Akio Ohmory, Ichiro Kawata, Hiroyuki Akasu | 1989-10-17 |
| 4402940 | Method for treating blood plasma employing a hollow fiber membrane | Yukihiko Nose, Koji Kayashima, Yoshihiro Asanuma, Shigeru Shinagawa, James Edward Smith, JR. +2 more | 1983-09-06 |
| 4279752 | Polyvinyl alcohol semi-permeable membrane and method for producing same | Takehiko Okamoto, Akio Ohmori, Syuji Kawai, Minoru Ueda | 1981-07-21 |