Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5935021 | Golf ball | Yasushi Ichikawa, Rinya Takesue | 1999-08-10 |
| 5929189 | Golf ball | Yasushi Ichikawa | 1999-07-27 |
| 5902192 | Golf ball | Yasushi Ichikawa, Rinya Takesue | 1999-05-11 |
| 5872185 | Golf ball | Yasushi Ichikawa, Hisashi Yamagishi, Hiroshi Higuchi | 1999-02-16 |