Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4773435 | Device for decreasing side stream smoke of tobacco products | Sadao Nakano, Toshiyuki Nishijima | 1988-09-27 |
| 4691717 | Cigarettes | Shozen Yonamine | 1987-09-08 |
| 4638819 | Device for decreasing side stream smoke of tobacco products | — | 1987-01-27 |