Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10623856 | Signature tuning filters | James R. Conrey | 2020-04-14 |
| 10375476 | Signature tuning filters | James R. Conrey | 2019-08-06 |
| 4850118 | Humidity control for roll paper electrostatic plotters | — | 1989-07-25 |