Inventor
Jeffrey B. Roberts
Inventor
Viola, ID, US
Overview
Patents· 32 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Hprimary
H02HEmergency protective circuit arrangements65%
G01RMeasuring electric variables10%
H02JElectric power networks8%
LOC245%
H01HElectric switches3%
H02BBoards, substations or switching arrangements for the supply or distribution of electric power3%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems3%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications3%
Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids3%
PatentTitleYear
8,072,715'Method, apparatus and computer program product for fault protection'20117,582,986'Compensated inverse-time undervoltage load shedding systems'20097,453,674'Method for protecting an electric generator'20086,839,210'Bus total overcurrent system for a protective relay'20056,785,105'Ground fault detection system for ungrounded power systems'20046,721,671'Directional element to determine faults on ungrounded power systems'20046,608,742'Voltage and current source selection system for use in the protection, automation and control of an electric power system'20036,590,397'Line differential protection system for a power transmission line'20036,573,726'Sensitive ground fault detection system for use in compensated electric power distribution networks'20036,560,132'System for obtaining phase-ground voltages from a broken delta VT voltage connection system'20036,525,543'Fault type selection system for identifying faults in an electric power system'20036,518,767'Line differential protection system for a power transmission line'20036,417,791'Delta filter with an adaptive time window for protective relays'20026,256,592'Multi-ended fault location system'20016,101,075'System for improving protective relay coordination with other protective elements in power system'20006,084,755'Protective relay-based monitoring system of DC power within an electric power substation'20006,028,754'System for preventing undesired protective relay tripping actions due to coupling capacitor voltage transformer transients'20006,011,480'Protection quality capability for protective relays used in an electric power system'20005,883,578'Loss of potential determination for use in protective relays for electric power systems'1999D0402030'Electrosurgical pencil with push button actuators'1998D0402031'Electrosurgical pencil with rocker arm actuator'19985,808,845'System for preventing sympathetic tripping in a power system'19985,790,418'Adaptive polarizing memory voltage time constant'19985,731,943'Protective relay having out-of-step logic capability'19985,703,745'System for detection of transients from a coupling capacitor voltage transformer used in a protective relay'19975,694,281'Zero sequence voltage-polarized directional element for protective relays'19975,602,707'Detection of transformer high side fuse operations in a power transmission system'19975,515,227'Fault identification system for use in protective relays for power transmission lines'19965,365,396'Negative sequence directional element for a relay useful in protecting power transmission lines'19945,349,490'Negative sequence directional element for a relay useful in protecting power transmission lines'19945,262,679'Polarizing potential transfer switch circuit for use with power transmission lines'19935,041,737'Programmable bus-tie relay having a plurality of selectable setting groups'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2009Patents assigned to SCHWEITZER ENGINEERING LAB INC (26)· patent assignee history
1994–1999Based in Moscow, ID, US· patent location history
1998Patents assigned to MEGADYNE MED PROD INC (2)· patent assignee history
1998Based in Draper, UT, US· patent location history
2000Based in Pullman, WA, US· patent location history
2001–2009Based in Viola, ID, US· patent location history
2008Patents assigned to BATTELLE ENERGY ALLIANCE LLC (1)· patent assignee history
2008–2011Based in Ammon, ID, US· patent location history
2011Patents assigned to DUSANG JR LOUIS V (1)· patent assignee history
2011Patents assigned to HUNTINGTON INGALLS INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHWEITZER ENGINEERING LAB INC | 26 | 1991–2009 |
| MEGADYNE MED PROD INC | 2 | 1998 |
| BATTELLE ENERGY ALLIANCE LLC | 1 | 2008 |
| DUSANG JR LOUIS V | 1 | 2011 |
| HUNTINGTON INGALLS INC | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Viola, ID, US | 12 | 2001–2009 |
| Moscow, ID, US | 10 | 1994–1999 |
| Pullman, Washington, US | 4 | 2000 |
| Ammon, ID, US | 2 | 2008–2011 |
| Draper, UT, US | 2 | 1998 |