Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5151531 | Dihydric phenols | Takashi Nakagawa, Shuji Sakamoto | 1992-09-29 |
| 4923962 | Optical disk substrate comprising aromatic polycarbonate | Shigenori Shirouzu, Shuji Sakamoto, Toshiyasu Suzuki | 1990-05-08 |
| 4892924 | Polycarbonate containing compound from bis(3-phenyl-4-hydroxyphenyl) | Takashi Nakagawa, Shuji Sakamoto | 1990-01-09 |
| 4801679 | Polyformal resin and process for producing said resin | Shigenori Shirouzu | 1989-01-31 |