Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5102966 | Process for preparing star compounds | Mitsuo Sawamoto, Hajime Shohi | 1992-04-07 |
| 4778868 | Polymer and a membrane having an improved gas-permeability and selectivity | Toshio Masuda, Koichi Takada | 1988-10-18 |
| 4755193 | Polymer and a membrane having an improved gas-permeability and selectivity | Toshio Masuda, Koichi Takada | 1988-07-05 |
| 4696988 | Process for preparation of reactive polymers and polymers prepared by said process | Mitsuo Sawamoto, Yoshiki Toyoshima, Shuuichi Kanagawa, Tsutomu Takahashi, Noriaki Saito | 1987-09-29 |
| 4591440 | Membranes for liquid separations | Toshio Masuda | 1986-05-27 |