Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7753813 | Ball for ball game and method for manufacturing the same | Hideomi Shishido, Shigeo Doi, Yoshihisa Okimura | 2010-07-13 |
| 7427246 | Ball for ball game and method for manufacturing the same | Hideomi Shishido, Shigeo Doi, Yoshihisa Okimura | 2008-09-23 |