Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670604 | Preparation of a polycarbonate by melt-polycondensation of a dihydric phenol and a carbonic diester | Tatsuya Kanno | 1997-09-23 |
| 5610262 | Process for producing polycarbonate | Tsutomu Yamato, Yasuhiro Oshino, Tatsuya Kanno, Takaaki Kuwana | 1997-03-11 |