Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D778347 | Electronic keyboard | — | 2017-02-07 |
| 9272745 | Automatic drop seatpost | David Camp | 2016-03-01 |
| D718374 | Digital piano | — | 2014-11-25 |
| 8833786 | Automatic drop seatpost | David Camp | 2014-09-16 |
| D627197 | Elephant foot mug | — | 2010-11-16 |
| D626786 | Alligator foot mug | — | 2010-11-09 |
| D626378 | Tiger foot mug | — | 2010-11-02 |
| 6739653 | Wheelchair table with ergonomic aid | Robert L. Hoekstra, Michael Mullens, Rashendra A. Shah, Prasanth Kumar Thupili, Jon Moen | 2004-05-25 |
| 6450570 | Wheelchair table with ergonomic aid | Robert L. Hoekstra, Michael Mullens, Rashendra A. Shah, Prasanth Kumar Thupili, Jon Moen | 2002-09-17 |