Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11022712 | Multi-frequency metal detector | — | 2021-06-01 |
| 9285496 | Truncated half-sine methods for metal detectors | — | 2016-03-15 |
| 9207315 | Metal detector with motion sensing | John W. Plautz, Anne Kelley, Jeffrey Kelley | 2015-12-08 |
| 8749240 | Time domain method and apparatus for metal detectors | Eric Foster, John L. Earle | 2014-06-10 |
| 8729902 | Metal detector analysis and display methods | Jeff Kelley, Anne Kelley, John W. Plautz, Robert M. Canaday, Brian Hupy | 2014-05-20 |
| 6822519 | Synthesizer structures and alignment methods that facilitate quadrature demodulation | Bryan S. Puckett | 2004-11-23 |
| 6753732 | Accurate, wide-band, low-noise variable-gain amplifier structures and gain control methods | — | 2004-06-22 |
| 6686864 | Pipelined analog-to-digital converters with gain-matching structures | — | 2004-02-03 |
| 6307491 | Trim systems and methods having temporary and permanent operational modes | Russel G. Stop | 2001-10-23 |
| 6304201 | Precision digital-to-analog converters and methods having programmable trim adjustments | Russel G. Stop | 2001-10-16 |
| 6294902 | Bandgap reference having power supply ripple rejection | Marvin J. Young | 2001-09-25 |
| 6191619 | Translators and methods for converting differential signals to single-ended signals | Michael R. Elliott | 2001-02-20 |
| 6163290 | Linearizing structures and methods for unity-gain folding amplifiers | Michael R. Elliott | 2000-12-19 |
| 5861831 | Intermediate frequency (IF) sampling clock-to-clock auto-ranging analog-to-digital converter (ADC) and method | Franklin M. Murden, Harvey Ray, Michael R. Elliott, Marvin J. Young | 1999-01-19 |
| 5757220 | Digitally controlled programmable attenuator | Franklin M. Murden | 1998-05-26 |
| 5684419 | n-bit analog-to-digital converter with n-1 magnitude amplifiers and n comparators | Frank Murden | 1997-11-04 |
| 5673047 | Gain-compensating differential reference circuit | — | 1997-09-30 |
| 5554943 | Analog to digital converter having a magnitude amplifier with an improved differential input amplifier | — | 1996-09-10 |
| 5539338 | Input or output selectable circuit pin | — | 1996-07-23 |
| 5534794 | Selectable logic output stage | — | 1996-07-09 |