Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D281984 | Toy block | Shinroku Nakao, Yoshiyasu Ishii | 1985-12-31 |
| D281354 | Electric massage instrument | Shinroku Nakao, Yoshiyasu Ishii, Kazuo Nagata | 1985-11-12 |
| D275525 | Slipper | Shinroku Nakao, Yoshiyasu Ishii | 1984-09-18 |
| D275429 | Sandal | Shinroku Nakao, Yoshiyasu Ishii, Kenshun Ishii | 1984-09-11 |
| D269305 | Sandal | Shinroku Nakao, Yoshiyasu Ishii, Kenshun Ishii | 1983-06-14 |
| D264234 | Toy vehicle | Shinroku Nakao, Yoshiyasu Ishii | 1982-05-04 |
| D263159 | Pushing toy vehicle | Shinroku Nakao, Yoshiyasu Ishii, Taira Hanashima | 1982-02-23 |