Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798285 | Amplifier improvements | — | 2004-09-28 |
| 6690169 | Interference cancelling metal detector including electronic selection of effective sensing coil arrangement | — | 2004-02-10 |
| 6686742 | Ground mineralization rejecting metal detector (power saving) | — | 2004-02-03 |
| 6653838 | Ground mineralization rejecting metal detector (transmit signal) | — | 2003-11-25 |
| 6636044 | Ground mineralization rejecting metal detector (receive signal weighting) | — | 2003-10-21 |
| 6600367 | Low distortion amplifier | — | 2003-07-29 |
| 6052027 | Wideband operational amplifier having a plurality of feedback loops | — | 2000-04-18 |
| 5892398 | Amplifier having ultra-low distortion | — | 1999-04-06 |
| 5576624 | Pulse induction time domain metal detector | — | 1996-11-19 |
| 5563498 | Power supply regulator | — | 1996-10-08 |
| 5537041 | Discriminating time domain conducting metal detector utilizing multi-period rectangular transmitted pulses | — | 1996-07-16 |
| 5506506 | Metal detector for detecting and discriminating between ferrous and non-ferrous targets in ground | — | 1996-04-09 |
| 5496411 | Ultrasonic vibration generator and use of same for cleaning objects in a volume of liquid | — | 1996-03-05 |
| 5342042 | Ball location system | John R. Baxter | 1994-08-30 |
| 5303915 | Tennis ball to line location | — | 1994-04-19 |
| 4942360 | A method and apparatus of discrimination detection using multiple frequencies to determine a recognizable profile of an undesirable substance | — | 1990-07-17 |
| 4894618 | Metal detector using cross-correlation between components of received signals | — | 1990-01-16 |
| 4890064 | Metal detector sensing head with reduced eddy current coils | — | 1989-12-26 |