Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324380 | Method for masking confidential written material | — | 1994-06-28 |
| 5186463 | Method of playing a lottery game | Scott Fields, Stephen B. Richter | 1993-02-16 |
| 5013088 | Disintegratable masking label | — | 1991-05-07 |