Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4369303 | Process for producing an aromatic polyesterpolycarbonate | Katsuhisa Kohyama, Katsuhiko Nakamura, Katsuyuki Sakata, Akira Matsuno | 1983-01-18 |
| 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 |
| 4308373 | Halogen-containing polycarbonate resin and process for producing same | Katsuhisa Kohyama, Katsuhiko Nakamura, Shigeyuki Haruhata | 1981-12-29 |