Issued Patents All Time
Showing 76–81 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5222739 | Golf ball | Seiichiro Endo | 1993-06-29 |
| 5209471 | Pressureless tennis ball | Yoshinobu Nakamura | 1993-05-11 |
| 4947466 | Tennis ball | Yoshinobu Makamura | 1990-08-07 |
| 4946166 | Tennis ball | Yoshinobu Nakamura | 1990-08-07 |
| 4592550 | Tennis balls and core therefor | — | 1986-06-03 |
| 4580781 | Pressureless tennis ball | Masao Nakamura | 1986-04-08 |