Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4242208 | Semipermeable composite membrane and process for preparation thereof | Takeyuki Kawaguchi, Yutaka Taketani, Hiroyoshi Minematsu, Noriaki Sasaki, Yuzuru Hayashi | 1980-12-30 |
| 4220563 | Heat-curable and solvent-soluble ester group-containing polymer compositions and process for their preparation | Takeyoshi Yamada | 1980-09-02 |
| 4218247 | Photoconductive resin containing tertiary amino groups for electrophotography | Iwao Omae | 1980-08-19 |