Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6752501 | Lensless laser focusing device | — | 2004-06-22 |
| 6731421 | Wedge-shaped lensless laser focusing device | — | 2004-05-04 |
| 5149065 | Foam cushion with labyrinthine side seams | Charles M. Willden | 1992-09-22 |
| 4999975 | Apparatus and methods for dispensing foamable products | Charles M. Willden | 1991-03-19 |