Issued Patents All Time
Showing 25 most recent of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942367 | Auto-zeroing switched-capacitance buffer amplifiers with minus-unity voltage gain | — | 1990-07-17 |
| 4912423 | Chopper-stabilized operational transconductance amplifier | David Regenold | 1990-03-27 |
| 4894656 | Self-calibrating pipelined subranging analog-to-digital converter | Jyh-Ping Hwang, Wen-Tai Lin, Sharbel E. Noujaim | 1990-01-16 |
| 4894657 | Pipelined analog-to-digital architecture with parallel-autozero analog signal processing | Jyh-Ping Hwang | 1990-01-16 |
| 4870351 | Electronic watt-hour meter with up and down integration for error correction | — | 1989-09-26 |
| 4859937 | Pulse width modulator in an electronic watt-hour meter with up and down integration for error correction | — | 1989-08-22 |
| 4808942 | Continuous mode auto-zero offset amplifier or integrator | — | 1989-02-28 |
| 4800333 | Switched-capacitor watthour meter circuit having reduced capacitor ratio | — | 1989-01-24 |
| 4794333 | Continuous switched-capacitor dual slope watthour meter circuit with charge injection offset compensation | — | 1988-12-27 |
| 4786863 | Solid state watthour meter with switched-capacitor integration | — | 1988-11-22 |
| 4754219 | Low cost self-contained transformerless solid state electronic watthour meter having thin film ferromagnetic current sensor | — | 1988-06-28 |
| 4733171 | Differential switched-capacitor dual slope watthour meter circuit | — | 1988-03-22 |
| 4682102 | Solid state watthour meter with switched-capacitor integration | — | 1987-07-21 |
| 4556843 | Electronic solid state Q-hour meter and/or combination Q-hour and kilowatt-hour meter | Anthony P. Bogacki | 1985-12-03 |
| 4535287 | Electronic watt/watthour meter with automatic error correction and high frequency digital output | — | 1985-08-13 |
| 4495463 | Electronic watt and/or watthour measuring circuit having active load terminated current sensor for sensing current and providing automatic zero-offset of current sensor DC offset error potentials | — | 1985-01-22 |
| 4492919 | Current sensors | — | 1985-01-08 |
| 4485343 | Electronic watt and watthour meter having analog and digital outputs with automatic error correction | — | 1984-11-27 |
| 4451784 | Electronic watt transducer circuit with constant DC current output proportional to watts | — | 1984-05-29 |
| 4414510 | Low cost sensing system and method employing anistropic magneto-resistive ferrite member | — | 1983-11-08 |
| 4296413 | Resistance-bridge to frequency converter with automatic offset correction | — | 1981-10-20 |
| 4286214 | Current sensor for phase inversion-modulation of AC signals | — | 1981-08-25 |
| 4278940 | Means for automatically compensating DC magnetization in a transformer | — | 1981-07-14 |
| 4262532 | Pressure and temperature sensor | Walter J. Butler | 1981-04-21 |
| 4255705 | Peak detection and electronic compensation of D. C. saturation magnetization in current transformers used in watt hour meter installations | — | 1981-03-10 |