Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6185482 | System and method for rms overcurrent backup function | Michael Egolf, James Stoupis | 2001-02-06 |
| 6173216 | Protective relay with improved, sub-window cosine filter | Khoi Vu, Damir Novosel | 2001-01-09 |
| 6154687 | Modified cosine filters | Damir Novosel, Robert A. Smith | 2000-11-28 |
| 6081768 | Digital peak detector | Yi Hu, Joseph P. Benco, James Stoupis | 2000-06-27 |
| 6005759 | Method and system for monitoring and controlling an electrical distribution network | William Peterson, David Uy, W. Michael Egolf | 1999-12-21 |
| 5839093 | System for locating faults and estimating fault resistance in distribution networks with tapped loads | Damir Novosel, Yi Hu, Jorma Myllymaki | 1998-11-17 |
| 5832413 | Generator protection system and method for phasor estimation and frequency tracking during frequency ramping | Joseph P. Benco, Frederick P. Perfect, James Stoupis | 1998-11-03 |
| 5832414 | Generator protection system and method of compensating for errors in phasor estimation due to oscillations in discrete Fourier transform | James Stoupis, Damir Novosel | 1998-11-03 |
| 5805395 | Half-cycle summation V/Hz relay for generator and transformer over-excitation protection | Yi Hu, Damir Novosel, Robert A. Smith | 1998-09-08 |
| 5721689 | System and method for phasor estimation and frequency tracking in digital protection systems | Yi Hu, Damir Novosel, Robert A. Smith | 1998-02-24 |
| 5671112 | Digital integrator V/Hz relay for generator and transformer over-excitation protection | Yi Hu, Damir Novosel, Robert A. Smith | 1997-09-23 |
| RE33180 | Light weight chassis and cabinet assembly for magnetic tape recorder | William R. Davis | 1990-03-13 |
| 4542864 | Brake device for coaxial reel tape recorders | — | 1985-09-24 |
| 4489358 | Light weight chassis and cabinet assembly for magnetic tape recorder | William R. Davis | 1984-12-18 |