Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9387374 | Golf club iron set producing flight having consistent angle of descent | Charles E. Golden, Daniel J. Stone, Richard M. Nelson | 2016-07-12 |
| D591808 | Iron golf club head | Karl A. Clausen, Scott A. Rice, Ryan L. Roach | 2009-05-05 |
| D579996 | Golf club head | Peter J. Gilbert, Christopher R. Kays, Douglas C. Jorgensen, Bruce R. Pettibone, Daniel J. Stone +1 more | 2008-11-04 |
| D571421 | Golf club set | Karl A. Clausen, Kevin C. Chau, Scott A. Rice, Peter L. Soracco | 2008-06-17 |