Issued Patents 2003
Showing 1–2 of 2 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 |