Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4894932 | Air-permeable shoe | Masasuke Harada, Yutaka Kumagawa | 1990-01-23 |
| 4858339 | Composite rubber sheet material and sports shoe employing the same | Hideki Hayafuchi, Kiyotaka Nakano | 1989-08-22 |
| 4633598 | Insole for shoe | Junji Izumi | 1987-01-06 |
| 4547979 | Athletic shoe sole | Masasuke Harada | 1985-10-22 |