Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D597283 | Combination hat and helmet | — | 2009-08-04 |
| D565799 | Helmet for combination hat and helmet | — | 2008-04-01 |
| 6880176 | Headgear | Michael J. Yokota, John Montello | 2005-04-19 |
| 6317896 | Headgear | Michael J. Yokota, John Montello | 2001-11-20 |
| D336552 | Youth sport helmet | Donald L. Millerd, Dennis G. Piper, David G. Kunze | 1993-06-15 |