Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6103117 | Polysulfone hollow fiber semipermeable membrane | Masaaki Shimagaki, Takeshi Sonoda, Koji Sugita | 2000-08-15 |
| 5938929 | Polysulfone hollow fiber semipermeable membrane | Masaaki Shimagaki, Takeshi Sonoda, Koji Sugita | 1999-08-17 |
| 5480953 | Hydrophilic material and semipermeable membrane made therefrom | Hiroyuki Sugaya, Masahiro Minaga, Ryozo Terada, Toshikazu Tayama, Kazumi Tanaka | 1996-01-02 |