Inventor · disambiguated record
William L. Kopko
Also filed as: KOPKO WILLIAM L · KOPKO WILLIAM LESLIE
67 granted patents·16 pending applications·1,473 citations·filing 1990–2024
99Inventor score
Files withJOHNSON CONTROLS TECH CO30KOPKO WILLIAM L9Johnson Controls Tyco IP Holdings LLP5ENHANCED TURBINE OUTPUT HOLDIN4WORK SMART ENERGY ENTPR INC4
Top patents by PatentIndex Score
83 records- 0198US7065953B1Supercharging system for gas turbinesENHANCED TURBINE OUTPUT HOLDIN·Filed 2000·Granted Jun 27, 2006·274 cites·22 claims
- 0297US10830503B2Heat pump system with multiple operating modesJOHNSON CONTROLS TECH CO·Filed 2019·Granted Nov 10, 2020·9 cites·10 claims
- 0395US8539789B2Heat-pump chiller with improved heat recovery featuresKOPKO WILLIAM L·Filed 2010·Granted Sep 24, 2013·17 cites·33 claims
- 0495US8234881B2Multichannel heat exchanger with dissimilar flowYANIK MUSTAFA K·Filed 2008·Granted Aug 7, 2012·33 cites·14 claims
- 0595US6513339B1Solar air conditionerWORK SMART ENERGY ENTPR INC·Filed 2000·Granted Feb 4, 2003·67 cites·30 claims
- 0694US11175076B2Free cooling refrigeration systemJOHNSON CONTROLS TECH CO·Filed 2017·Granted Nov 16, 2021·6 cites·17 claims
- 0794US10047985B2Subcooling system with thermal energy storageJOHNSON CONTROLS TECH CO·Filed 2015·Granted Aug 14, 2018·6 cites·8 claims
- 0894US10018393B2Method for controlling an economizer circuitJOHNSON CONTROLS TECH CO·Filed 2015·Granted Jul 10, 2018·9 cites·19 claims
- 0994US8813511B2Control system for operating condenser fansKOPKO WILLIAM L·Filed 2010·Granted Aug 26, 2014·20 cites·19 claims
- 1094US6121749AVariable-speed drive for single-phase motorsWORK SMART ENERGY ENTPR INC·Filed 1999·Granted Sep 19, 2000·93 cites·9 claims
- 1194US5947854ACombined variable-speed drive and speed reducer for pumps and fansWORKSMART ENERGY ENTERPRISES I·Filed 1998·Granted Sep 7, 1999·83 cites·19 claims
- 1293US8166776B2Multichannel heat exchangerKOPKO WILLIAM L·Filed 2008·Granted May 1, 2012·26 cites·27 claims
- 1393US6035637AFree-piston internal combustion engineSUNPOWER INC·Filed 1998·Granted Mar 14, 2000·70 cites·27 claims
- 1492US8439104B2Multichannel heat exchanger with improved flow distributionDE LA CRUZ JOSE RUEL YALUNG·Filed 2009·Granted May 14, 2013·20 cites·22 claims
- 1592US7908881B2HVAC system with powered subcoolerYORK INT CORP·Filed 2006·Granted Mar 22, 2011·21 cites·25 claims
- 1691US8938988B2Multichannel heat exchanger with dissimilar flowYANIK MUSTAFA K·Filed 2012·Granted Jan 27, 2015·10 cites·9 claims
- 1791US6718771B1Gas turbine operative at high ambient temperaturesENHANCED TURBINE OUTPUT HOLDIN·Filed 2000·Granted Apr 13, 2004·53 cites·20 claims
- 1891US5406805ATandem refrigeration systemUNIV MARYLAND·Filed 1993·Granted Apr 18, 1995·109 cites·18 claims
- 1990US11359847B2Systems and methods for controlling a refrigeration systemJOHNSON CONTROLS TECH CO·Filed 2017·Granted Jun 14, 2022·6 cites·19 claims
- 2090US7757753B2Multichannel heat exchanger with dissimilar multichannel tubesJOHNSON CONTROLS TECH CO·Filed 2008·Granted Jul 20, 2010·18 cites·22 claims
- 2189US10371428B2Subcooling system with thermal storageJOHNSON CONTROLS TECH CO·Filed 2017·Granted Aug 6, 2019·3 cites·10 claims
- 2289US7942020B2Multi-slab multichannel heat exchangerJOHNSON CONTROLS TECH CO·Filed 2008·Granted May 17, 2011·15 cites·19 claims
- 2389US6442942B1Supercharging system for gas turbinesENHANCED TURBINE OUTPUT HOLDIN·Filed 1999·Granted Sep 3, 2002·98 cites·51 claims
- 2487US11774154B2Systems and methods for controlling a refrigeration systemJohnson Controls Tyco IP Holdings LLP·Filed 2022·Granted Oct 3, 2023·1 cites·19 claims
- 2587US10317112B2Heat pump system with multiple operating modesJOHNSON CONTROLS TECH CO·Filed 2015·Granted Jun 11, 2019·3 cites·2 claims
- 2686US9885503B2Refrigeration system with free-coolingJOHNSON CONTROLS TECH CO·Filed 2017·Granted Feb 6, 2018·2 cites·8 claims
- 2786US8561427B2Multi-slab multichannel heat exchangerKNIGHT JOHN T·Filed 2011·Granted Oct 22, 2013·8 cites·20 claims
- 2885US9869487B2Heat exchanger having stacked coil sectionsNICKEY GLENN EUGENE·Filed 2011·Granted Jan 16, 2018·7 cites·20 claims
- 2985US8899942B2Volume ratio control system and methodKOPKO WILLIAM L·Filed 2011·Granted Dec 2, 2014·5 cites·17 claims
- 3085US7980094B2Multichannel heat exchanger with dissimilar tube spacingJOHNSON CONTROLS TECH CO·Filed 2009·Granted Jul 19, 2011·8 cites·20 claims
- 3185US7677057B2Multichannel heat exchanger with dissimilar tube spacingJOHNSON CONTROLS TECH CO·Filed 2008·Granted Mar 16, 2010·7 cites·18 claims
- 3285US6286326B1Control system for a refrigerator with two evaporating temperaturesWORKSMART ENERGY ENTPR INC·Filed 1999·Granted Sep 11, 2001·65 cites·15 claims
- 3384US9631852B2System and method for controlling compressor motor voltageJOHNSON CONTROLS TECH CO·Filed 2014·Granted Apr 25, 2017·4 cites·6 claims
- 3483US10203140B2Refrigerant control system for a flash tankJOHNSON CONTROLS TECH CO·Filed 2016·Granted Feb 12, 2019·2 cites·20 claims
- 3583US5076064AMethod and refrigerants for replacing existing refrigerants in centrifugal compressorsYORK INT CORP·Filed 1990·Granted Dec 31, 1991·44 cites·19 claims
- 3682US10812005B2Variable speed drive with a batteryJOHNSON CONTROLS TECH CO·Filed 2017·Granted Oct 20, 2020·2 cites·18 claims
- 3782US9121627B2System and method for controlling an economizer circuitKOPKO WILLIAM L·Filed 2011·Granted Sep 1, 2015·4 cites·14 claims
- 3881US10401068B2Air cooled chiller with heat recoveryJOHNSON CONTROLS TECH CO·Filed 2014·Granted Sep 3, 2019·3 cites·22 claims
- 3981US2024255197A1Mechanical-cooling, free-cooling, and hybrid-cooling operation of a chillerTYCO FIRE & SECURITY GMBH·Filed 2024·Application pending·0 cites
- 4080US11320183B2Subcooling system with thermal energy storageJOHNSON CONTROLS TECH CO·Filed 2018·Granted May 3, 2022·1 cites·10 claims
- 4180US10215444B2Heat exchanger having stacked coil sectionsJOHNSON CONTROLS TECH CO·Filed 2018·Granted Feb 26, 2019·2 cites·20 claims
- 4280US9581364B2Refrigeration system with free-coolingJOHNSON CONTROLS TECH CO·Filed 2014·Granted Feb 28, 2017·2 cites·11 claims
- 4380US7240478B2Highly supercharged regenerative gas turbineMECHANOLOGY INC·Filed 2006·Granted Jul 10, 2007·16 cites·13 claims
- 4478US9874378B2Refrigeration system with free-coolingJOHNSON CONTROLS TECH CO·Filed 2017·Granted Jan 23, 2018·1 cites·8 claims
- 4577US11199356B2Free cooling refrigeration systemKOPKO WILLIAM L·Filed 2010·Granted Dec 14, 2021·3 cites·16 claims
- 4676US9429345B2Heat-pump chiller with improved heat recovery featuresJOHNSON CONTROLS TECH CO·Filed 2013·Granted Aug 30, 2016·2 cites·20 claims
- 4776US6994156B2Air-conditioning system with thermal storageCOOLSMART LLC·Filed 2002·Granted Feb 7, 2006·25 cites·20 claims
- 4875US10739045B2Systems and methods for controlling a refrigeration systemJOHNSON CONTROLS TECH CO·Filed 2017·Granted Aug 11, 2020·1 cites·25 claims
- 4975US6880343B2Supercharged gas turbine with improved controlFiled 2002·Granted Apr 19, 2005·18 cites·9 claims
- 5075US6405543B2High-efficiency air-conditioning system with high-volume air distributionWORK SMART ENERGY ENTPR INC·Filed 2001·Granted Jun 18, 2002·26 cites·10 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →