Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323519 | Method of washing organic solvent solution of polycarbonate | Katsuhisa Kohyama, Katsuhiko Nakamura, Shinichi Takamatsu | 1982-04-06 |
| 4323663 | Process for producing a halogen-containing polycarbonate resin | Katsuhisa Kohyama, Katsuhiko Nakamura | 1982-04-06 |