Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5578694 | Process for producing aromatic polycarbonate | Masuzo Yokoyama, Junji Takano, Masami Hasegawa | 1996-11-26 |
| 5527875 | Process for producing aromatic polycarbonate | Masuzo Yokoyama, Fumio Keitoku, Junji Takano, Masami Hasegawa | 1996-06-18 |