Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6605686 | Method for producing an aromatic polycarbonate and method of keeping raw materials thereof | Toru Sawaki, Keiichi Kaneko, Katsushi Sasaki | 2003-08-12 |
| 6525171 | Process for producing a polycarbonate and method of cleaning a production unit | Toru Sawaki, Katsushi Sasaki, Keiichi Kaneko | 2003-02-25 |
| 6323302 | Carbonic acid diester, aromatic polycarbonate and facilities, and preparation thereof | Katsushi Sasaki, Wataru Funakoshi, Toru Sawaki, Masumi Hirata, Hiroaki Kaneko +4 more | 2001-11-27 |
| 6265524 | Process for the preparation of aromatic polycarbonate | Toru Sawaki, Katsushi Sasaki | 2001-07-24 |