Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10518140 | Golf-club provided with a club-head having surfaces configured to be covered by air vortex flows | — | 2019-12-31 |
| 9975010 | Golf-club provided with a club-head having surfaces configured to be covered by air vortex flows | — | 2018-05-22 |
| 9421423 | Non-circular dimple golf ball | Sunao Umemura | 2016-08-23 |
| 7713138 | Wood club | Tomohiko Sato, Sunao Umemura, Yutaka Kawata | 2010-05-11 |
| 7255653 | Metal wood club | — | 2007-08-14 |
| 6620055 | Golf club | — | 2003-09-16 |
| 6482106 | Wood-type club | — | 2002-11-19 |
| 5916043 | Golf club | — | 1999-06-29 |
| 5645495 | Golf club | — | 1997-07-08 |