Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391691 | Process for producing aromatic polycarbonate | Masuzo Yokoyama, Junji Takano | 1995-02-21 |
| 5250655 | Melt preparation of polycarbonate with metal compound and p compound catalysts | Masuzo Yokoyama, Junji Takano | 1993-10-05 |