Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671151 | Network protector relay and method of controlling a circuit breaker employing two trip characteristics | David R. Smith, John Moffat | 2003-12-30 |
| 6504693 | Network protector relay providing a close function | John Moffat, John C. Schlotterer, David M. Oravetz | 2003-01-07 |
| 6407897 | Network protector with diagnostics | Robert Yanniello, John Moffat, Steven E. Meiners, Joseph C. Engel | 2002-06-18 |
| 5544065 | Apparatus for digitizing ac signals of unknown or changing frequency | Joseph C. Engel | 1996-08-06 |
| 5384712 | Energy monitoring system for a plurality of local stations with snapshot polling from a central station | David M. Oravetz, Robert T. Elms, Joseph C. Engel, Frank Klancher | 1995-01-24 |
| 5315531 | Energy monitoring system for a plurality of local stations with snapshot polling from a central station | David M. Oravetz, Robert T. Elms, Joseph C. Engel, Frank Klancher | 1994-05-24 |
| 5010507 | Sampled digital filter system | — | 1991-04-23 |
| 4804515 | Distributed microprocessor based sensor signal processing system for a complex process | Albert W. Crew, James A. Neuner, Gilbert W. Remley, Robert E. Hager, George M. Chambers +3 more | 1989-02-14 |
| 4725937 | Low power dissipation analog current loop output circuit | James F. Sutherland | 1988-02-16 |
| 4700174 | Analog signal processor | James F. Sutherland, Albert W. Crew | 1987-10-13 |
| 4691263 | Low leakage, solid state a-c power contact | James F. Sutherland | 1987-09-01 |
| 4651020 | Redundant power supply system | Carl A. Vitalbo | 1987-03-17 |
| 4644440 | Redundant power supply arrangement with surge protection | James F. Sutherland | 1987-02-17 |
| 4642636 | Method and apparatus for auto-calibration of signal conditioning electronics | John R. Smith, Kingsley F. Graham, James A. Neuner, Douglas A. Bauman, Timothy F. Thompson +3 more | 1987-02-10 |