Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6287214 | Golf club head | — | 2001-09-11 |
| D446268 | Golf club head | Hiroshi Ishikawa, Yasushi Mochida | 2001-08-07 |
| D437373 | Golf club head | Hiroshi Ishikawa | 2001-02-06 |
| 6179726 | Iron golf club set | Hiroshi Ishikawa | 2001-01-30 |