Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5874903 | RF repeater for automatic meter reading system | Kathryn J. Smith, Rodney C. Hemminger, Arnold W. Bragg | 1999-02-23 |
| 5835331 | Half-wave drive circuit for meter disconnect switch | — | 1998-11-10 |
| 5694108 | Apparatus and methods for power network coupling | — | 1997-12-02 |
| 5488565 | Tamper detection methods and apparatus for load management terminals | Jerry M. Kennon, Michael A. Murphy | 1996-01-30 |
| 5185591 | Power distribution line communication system for and method of reducing effects of signal cancellation | — | 1993-02-09 |
| 4890089 | Distribution of line carrier communications | — | 1989-12-26 |
| 4766414 | Power line communication interference preventing circuit | — | 1988-08-23 |
| 4746897 | Apparatus for transmitting and receiving a power line | — | 1988-05-24 |
| 4686382 | Switch bypass circuit for power line communication systems | — | 1987-08-11 |
| 4668934 | Receiver apparatus for three-phase power line carrier communications | — | 1987-05-26 |
| 4645956 | Current limiter for power line communication amplifier | — | 1987-02-24 |
| 4500837 | Detection of DC content in an AC waveform | Charles L. Doughman | 1985-02-19 |
| 4453089 | Transistor base drive circuit | David L. Stechschulte | 1984-06-05 |
| 4370702 | Microprocessor control of inverter power transistors with DC content correction | Mark A. Rosswurm | 1983-01-25 |
| 4359681 | Alternating current power controller with DC transistor switching and an internal DC power supply | Donal E. Baker | 1982-11-16 |
| 4326234 | Electrically held power relay circuit with reduced power dissipation | — | 1982-04-20 |
| 4249223 | High voltage DC contactor with solid state arc quenching | Donal E. Baker, Charles L. Doughman | 1981-02-03 |
| 4242629 | DC Switching voltage regulator with extended input voltage capability | — | 1980-12-30 |