Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007281 | Plastic working method and apparatus | Kunio Hirota, Hiroshi Sakakibara, Naoyuki Sawai, Takeaki Sato | 1991-04-16 |
| 4936125 | Plastic working method and apparatus | Kunio Hirota, Hiroshi Sakakibara, Naoyuki Sawai, Takeaki Sato | 1990-06-26 |