Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4553376 | Automatic continuous vacuum packaging method and apparatus | Shingo Okada, Yuji Sawa | 1985-11-19 |
| 4534155 | Solid material packing method and machine | Yuji Sawa, Toshio Itoh | 1985-08-13 |
| 4419854 | Automatic continuous vacuum packaging method and apparatus | Shingo Okada, Yuji Sawa | 1983-12-13 |