Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12211471 | DC power control devices with electrically isolated outputs | David E. Christian | 2025-01-28 |
| 11705097 | Battery powered devices with electrically isolated outputs | David E. Christian | 2023-07-18 |
| 10706828 | Power plate pedal board for musical instrument electronics | David E. Christian | 2020-07-07 |
| 10262123 | Multimodal biometric authentication system and method with photoplethysmography (PPG) bulk absorption biometric | James P. Ashley, Julius S. Gyorfi | 2019-04-16 |
| 9892247 | Multimodal biometric authentication system and method with photoplethysmography (PPG) bulk absorption biometric | James P. Ashley, Julius S. Gyorfi | 2018-02-13 |
| 5338936 | Simultaneous transmission and emission converging tomography | Grant T. Gullberg, Hugh T. Morgan, Chi-Hua Tung, Gengsheng Lawrence Zeng | 1994-08-16 |
| 5210421 | Simultaneous transmission and emission converging tomography | Grant T. Gullberg, Hugh T. Morgan, Chi-Hua Tung, Gengsheng Lawrence Zeng | 1993-05-11 |
| 4594081 | Gas scrubber | Walter Kroll | 1986-06-10 |