Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290919 | Electrostatic separating apparatus | Sadahiko Yokoyama, Masao Shimoda, Masatoshi Iji | 2001-09-18 |
| 6244445 | Moisturizing equipment | Sadahiko Yokoyama, Masao Shimoda | 2001-06-12 |