Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352651 | Mold equipment | Sadao Kumasaka, Goro Yoneyama, Kazuo Hashimoto | 1982-10-05 |
| 4338271 | Method for manufacturing a low density synthetic resin body | Sadao Kumasaka, Shigeo Horikoshi, Tokio Tsuchiya, Masashi Numabe | 1982-07-06 |
| 4325688 | Mold equipment | Sadao Kumasaka, Goro Yoneyama, Junichi Seki | 1982-04-20 |