Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6211807 | System using spread spectrum modulation for locating underground objects | — | 2001-04-03 |
| RE35901 | Solid state isolation device using opto-isolators | Zhenyu Liu | 1998-09-22 |
| 5465298 | Solid state isolation device using opto-isolators | Zhenyu Liu | 1995-11-07 |
| 5245654 | Solid state isolation device using opto-isolators | Don N. Lee | 1993-09-14 |
| D298627 | Credit/debit authorization and financial transaction terminal or similar article | Harry Raymond Soza, Craig C. Williams, Bruce Lang, Thomas J. Clark | 1988-11-22 |
| 4782217 | Financial transaction terminal and card reader system adaptable thereto | Harry Raymond Soza, Craig C. Williams, Thomas J. Clark | 1988-11-01 |