Assignee
ELECTRIC POWER RES INST
US·901 granted patents·30 pending applications·31,610 citations·filing 1974–2016
Top patents by PatentIndex Score
931 records- 0198US6558454B1Method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbentsELECTRIC POWER RES INST·Filed 2001·Granted May 6, 2003·222 cites·23 claims
- 0298US5778675AMethod of power generation and load management with hybrid mode of operation of a combustion turbine derivative power plantELECTRIC POWER RES INST·Filed 1997·Granted Jul 14, 1998·232 cites·30 claims
- 0398US5341083AContactless battery charging systemELECTRIC POWER RES INST·Filed 1992·Granted Aug 23, 1994·425 cites·20 claims
- 0498US5341280AContactless coaxial winding transformer power transfer systemELECTRIC POWER RES INST·Filed 1991·Granted Aug 23, 1994·177 cites·86 claims
- 0598US5301096ASubmersible contactless power delivery systemELECTRIC POWER RES INST·Filed 1992·Granted Apr 5, 1994·344 cites·20 claims
- 0698US5062276AHumidity control for variable speed air conditionerELECTRIC POWER RES INST·Filed 1990·Granted Nov 5, 1991·220 cites·9 claims
- 0798US4234352AThermophotovoltaic converter and cell for use thereinELECTRIC POWER RES INST·Filed 1978·Granted Nov 18, 1980·180 cites·17 claims
- 0897US5899256AMetal-fly ash composites and low pressure infiltration methods for making the sameELECTRIC POWER RES INST·Filed 1997·Granted May 4, 1999·67 cites·18 claims
- 0997US5396715AMicrowave clothes dryer and method with fire protectionELECTRIC POWER RES INST·Filed 1994·Granted Mar 14, 1995·91 cites·6 claims
- 1097US4971136ADual fuel heat pump controllerELECTRIC POWER RES INST·Filed 1989·Granted Nov 20, 1990·184 cites·9 claims
- 1197US4283643AHall sensing apparatusELECTRIC POWER RES INST·Filed 1979·Granted Aug 11, 1981·125 cites·9 claims
- 1296US7141091B2Method and apparatus for removing particulate and vapor phase contaminants from a gas streamELECTRIC POWER RES INST·Filed 2003·Granted Nov 28, 2006·74 cites·62 claims
- 1396US6818043B1Vapor-phase contaminant removal by injection of fine sorbent slurriesELECTRIC POWER RES INST·Filed 2003·Granted Nov 16, 2004·197 cites·20 claims
- 1496US6364971B1Apparatus and method of repairing turbine bladesELECTRIC POWER RES INST·Filed 2000·Granted Apr 2, 2002·67 cites·18 claims
- 1596US5672925ADoubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windingsELECTRIC POWER RES INST·Filed 1995·Granted Sep 30, 1997·127 cites·19 claims
- 1696US5591253AElectrostatically enhanced separator (EES)ELECTRIC POWER RES INST·Filed 1995·Granted Jan 7, 1997·157 cites·8 claims
- 1796US5158580ACompact hybrid particulate collector (COHPAC)ELECTRIC POWER RES INST·Filed 1991·Granted Oct 27, 1992·117 cites·4 claims
- 1896US5057439AMethod of fabricating polysilicon emitters for solar cellsELECTRIC POWER RES INST·Filed 1990·Granted Oct 15, 1991·172 cites·13 claims
- 1996US4487996AShielded electrical cableELECTRIC POWER RES INST·Filed 1982·Granted Dec 11, 1984·119 cites·3 claims
- 2096US4303885ADigitally controlled multifrequency eddy current test apparatus and methodELECTRIC POWER RES INST·Filed 1979·Granted Dec 1, 1981·165 cites·26 claims
- 2195US5642009AQuasi square-wave back-EMF permanent magnet AC machines with five or more phasesELECTRIC POWER RES INST·Filed 1994·Granted Jun 24, 1997·116 cites·6 claims
- 2295US5491969APower plant utilizing compressed air energy storage and saturationELECTRIC POWER RES INST·Filed 1995·Granted Feb 20, 1996·475 cites·11 claims
- 2395US5467083AWireless downhole electromagnetic data transmission system and methodELECTRIC POWER RES INST·Filed 1993·Granted Nov 14, 1995·239 cites·41 claims
- 2495US5406051AWelding machine with a high frequency converterELECTRIC POWER RES INST·Filed 1993·Granted Apr 11, 1995·94 cites·4 claims
- 2595US5304882AVariable reluctance motors with permanent magnet excitationELECTRIC POWER RES INST·Filed 1992·Granted Apr 19, 1994·113 cites·22 claims
- 2695US5024681ACompact hybrid particulate collectorELECTRIC POWER RES INST·Filed 1989·Granted Jun 18, 1991·84 cites·9 claims
- 2795US4766734AHeat pump system with hot water defrostELECTRIC POWER RES INST·Filed 1987·Granted Aug 30, 1988·98 cites·6 claims
- 2895US4761703ARotor fault detector for induction motorsELECTRIC POWER RES INST·Filed 1987·Granted Aug 2, 1988·123 cites·22 claims
- 2995US4404614ASurge arrester having a non-fragmenting outer housingELECTRIC POWER RES INST·Filed 1981·Granted Sep 13, 1983·76 cites·8 claims
- 3095US4278905AApparatus for supporting a stator winding in a superconductive generatorELECTRIC POWER RES INST·Filed 1979·Granted Jul 14, 1981·60 cites·5 claims
- 3195US4208386AUrea reduction of NOx in combustion effluentsELECTRIC POWER RES INST·Filed 1976·Granted Jun 17, 1980·209 cites·9 claims
- 3295US4164772AAC fault current limiting circuitELECTRIC POWER RES INST·Filed 1978·Granted Aug 14, 1979·59 cites·7 claims
- 3395US4151747AMonitoring arrangement utilizing fiber opticsELECTRIC POWER RES INST·Filed 1978·Granted May 1, 1979·92 cites·18 claims
- 3494US7156902B1Wet electro-core gas particulate separatorELECTRIC POWER RES INST·Filed 2005·Granted Jan 2, 2007·26 cites·9 claims
- 3594US6278357B1Apparatus and method for implementing digital communications on a power lineELECTRIC POWER RES INST·Filed 2000·Granted Aug 21, 2001·429 cites·20 claims
- 3694US6136072AApparatus and method for the removal of contaminants in gasesELECTRIC POWER RES INST·Filed 1998·Granted Oct 24, 2000·106 cites·19 claims
- 3794US5594819AField-mountable fiber optic sensors for long term strain monitoring in hostile environmentsELECTRIC POWER RES INST·Filed 1995·Granted Jan 14, 1997·120 cites·20 claims
- 3894US5543239AElectrode design for solid state devices, fuel cells and sensorsELECTRIC POWER RES INST·Filed 1995·Granted Aug 6, 1996·137 cites·20 claims
- 3994US5379589APower plant utilizing compressed air energy storage and saturationELECTRIC POWER RES INST·Filed 1993·Granted Jan 10, 1995·149 cites·9 claims
- 4094US5356081AApparatus and process for employing synergistic destructive powers of a water stream and a laser beamELECTRIC POWER RES INST·Filed 1993·Granted Oct 18, 1994·145 cites·20 claims
- 4194US5249954AIntegrated imaging sensor/neural network controller for combustion systemsELECTRIC POWER RES INST·Filed 1992·Granted Oct 5, 1993·136 cites·25 claims
- 4294US4931950AMultimedia interface and method for computer systemELECTRIC POWER RES INST·Filed 1988·Granted Jun 5, 1990·343 cites·35 claims
- 4394US4808932ARotor fault and location detector for induction motorsELECTRIC POWER RES INST·Filed 1987·Granted Feb 28, 1989·46 cites·23 claims
- 4494US4766549ASingle-ended transmission line fault locatorELECTRIC POWER RES INST·Filed 1984·Granted Aug 23, 1988·170 cites·19 claims
- 4594US4694390AMicroprocessor-based control and diagnostic system for motor operated valvesELECTRIC POWER RES INST·Filed 1985·Granted Sep 15, 1987·121 cites·22 claims
- 4694US4582117AHeat transfer during casting between metallic alloys and a relatively moving substrateELECTRIC POWER RES INST·Filed 1983·Granted Apr 15, 1986·52 cites·11 claims
- 4794US4467281AMulti frequency eddy current test apparatus with intermediate frequency processingELECTRIC POWER RES INST·Filed 1980·Granted Aug 21, 1984·112 cites·12 claims
- 4894US4350838AUltrasonic fluid-atomizing cooled power transformerELECTRIC POWER RES INST·Filed 1980·Granted Sep 21, 1982·53 cites·11 claims
- 4994US4343707AMethod and apparatus for separating out solids suspended in flowing, pure water systemsELECTRIC POWER RES INST·Filed 1980·Granted Aug 10, 1982·72 cites·13 claims
- 5094US4325924AUrea reduction of NOx in fuel rich combustion effluentsELECTRIC POWER RES INST·Filed 1977·Granted Apr 20, 1982·152 cites·8 claims
Showing the top 50 of 931 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when ELECTRIC POWER RES INST files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →