Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12393031 | Transparent microled display for VR headsets | Johannes Willem Herman Sillevis Smitt | 2025-08-19 |
| 12018938 | Surface finish stylus | Stephen E. Lummes | 2024-06-25 |
| 11326869 | Surface finish stylus | Stephen E. Lummes | 2022-05-10 |
| D932558 | Puzzle toy | — | 2021-10-05 |
| 10369457 | Push button puzzle with internal locking mechanism, dual rotors, adjustable weights and a simplified reset | — | 2019-08-06 |
| 9238170 | Push button puzzle with internal locking mechanism | — | 2016-01-19 |
| 8651487 | Push button puzzle with internal locking mechanism | — | 2014-02-18 |
| 6945858 | Method for manufacturing non-seamed stone corners for veneer stone surfaces | — | 2005-09-20 |
| 6659099 | Method for manufacturing non-seamed stone corners for veneer stone surfaces | — | 2003-12-09 |