Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091125 | Method of forming anti-slip shoe sole | Hideki Hayafuchi, Kouji Tsukamoto | 1992-02-25 |
| 4894932 | Air-permeable shoe | Yutaka Kumagawa, Yoshiharu Moronaga | 1990-01-23 |
| 4890397 | Shoe for sports involving running | Hiroshi Kumagawa, Junji Izumi | 1990-01-02 |
| 4661547 | Antistatic material comprising (a) quaternary ammonium salt (b) peg having a molecular weight in the range 2000-5000 and (c) rubber or PVC | Kouji Tsukamoto, Tomohiro Etou | 1987-04-28 |
| 4547979 | Athletic shoe sole | Yoshiharu Moronaga | 1985-10-22 |