| Patent | Date |
|---|
Method, apparatus and computer program product for fault protection
Grant 8,072,715 - Dusang, Jr. , et al. December 6, 2 | 2011-12-06 |
Method, Apparatus and Computer Program Product for Fault Protection
App 20100014198 - Dusang, JR.; Louis V. ; et al. | 2010-01-21 |
Compensated inverse-time undervoltage load shedding systems
Grant 7,582,986 - Folkers , et al. September 1, 2 | 2009-09-01 |
Method for protecting an electric generator
Grant 7,453,674 - Kuehnle , et al. November 18, 2 | 2008-11-18 |
Method For Protecting An Electric Generator
App 20080232005 - Kuehnle; Barry W. ; et al. | 2008-09-25 |
Text-to-voice system for communicating operational information from a protective device for a power system to a human voice
App 20060146996 - Oman; Paul W. ; et al. | 2006-07-06 |
Compensated inverse-time undervoltage load shedding systems
App 20060077605 - Folkers; Ralph W. ; et al. | 2006-04-13 |
Bus total overcurrent system for a protective relay
Grant 6,839,210 - Roberts , et al. January 4, 2 | 2005-01-04 |
Ground fault detection system for ungrounded power systems
Grant 6,785,105 - Roberts , et al. August 31, 2 | 2004-08-31 |
Bus total overcurrent system for a protective relay
App 20040080884 - Roberts, Jeffrey B. ; et al. | 2004-04-29 |
Text-to-voice system for communicating operational information from a protective device for a power system to a human user
App 20040076273 - Oman, Paul W. ; et al. | 2004-04-22 |
Directional element to determine faults on ungrounded power systems
Grant 6,721,671 - Roberts April 13, 2 | 2004-04-13 |
Ground fault detection system for ungrounded power systems
App 20040021995 - Roberts, Jeffrey B. ; et al. | 2004-02-05 |
Voltage and current source selection system for use in the protection, automation and control of an electric power system
Grant 6,608,742 - Schweitzer, III , et al. August 19, 2 | 2003-08-19 |
Line differential protection system for a power transmission line
Grant 6,590,397 - Roberts July 8, 2 | 2003-07-08 |
Sensitive ground fault detection system for use in compensated electric power distribution networks
Grant 6,573,726 - Roberts , et al. June 3, 2 | 2003-06-03 |
Directional element to determine faults on ungrounded power systems
App 20030078745 - Roberts, Jeffrey B. | 2003-04-24 |
System For Obtaining Phase-ground Voltages From A Broken Delta Vt Voltage Connection Sytem
App 20030076700 - Roberts, Jeffrey B. | 2003-04-24 |
Fault type selection system for identifying faults in an electric power system
Grant 6,525,543 - Roberts , et al. February 25, 2 | 2003-02-25 |
Line differential protection system for a power transmission line
Grant 6,518,767 - Roberts , et al. February 11, 2 | 2003-02-11 |
Voltage and current source selection system for use in the protection, automation and control of an electric power system
App 20030007299 - Schweitzer, Edmund O. III ; et al. | 2003-01-09 |
Line differential protection system for a power transmission line
App 20020101229 - Roberts, Jeffrey B. | 2002-08-01 |
Delta filter with an adaptive time window for protective relays
Grant 6,417,791 - Benmouyal , et al. July 9, 2 | 2002-07-09 |
Multi-ended fault location system
Grant 6,256,592 - Roberts , et al. July 3, 2 | 2001-07-03 |
Protective relay-based monitoring system of DC power within an electric power substation
Grant 6,084,755 - Roberts , et al. July 4, 2 | 2000-07-04 |
Electrosurgical pencil with rocker arm actuator
Grant D402,031 - Roberts , et al. December 1, 1 | 1998-12-01 |
Electrosurgical pencil with push button actuators
Grant D402,030 - Roberts , et al. December 1, 1 | 1998-12-01 |
Protective relay having out-of-step logic capability
Grant 5,731,943 - Roberts , et al. March 24, 1 | 1998-03-24 |
System for detection of transients from a coupling capacitor voltage transformer used in a protective relay
Grant 5,703,745 - Roberts , et al. December 30, 1 | 1997-12-30 |
Fault identification system for use in protective relays for power transmission lines
Grant 5,515,227 - Roberts , et al. May 7, 1 | 1996-05-07 |
Negative sequence directional element for a relay useful in protecting power transmission lines
Grant 5,365,396 - Roberts , et al. November 15, 1 | 1994-11-15 |
Negative sequence directional element for a relay useful in protecting power transmission lines
Grant 5,349,490 - Roberts , et al. September 20, 1 | 1994-09-20 |
Polarizing potential transfer switch circuit for use with power transmission lines
Grant 5,262,679 - Schweitzer, III , et al. November 16, 1 | 1993-11-16 |
Programmable bus-tie relay having a plurality of selectable setting groups
Grant 5,041,737 - Schweitzer, III , et al. August 20, 1 | 1991-08-20 |
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