Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091125 | Method of forming anti-slip shoe sole | Masasuke Harada, Kouji Tsukamoto | 1992-02-25 |
| 4858339 | Composite rubber sheet material and sports shoe employing the same | Yoshiharu Moronaga, Kiyotaka Nakano | 1989-08-22 |