Assignee
PLUG POWER INC
US·160 granted patents·28 pending applications·4,845 citations·filing 1997–2024
Top patents by PatentIndex Score
188 records- 0197US6280865B1Fuel cell system with hydrogen purification subsystemPLUG POWER INC·Filed 1999·Granted Aug 28, 2001·284 cites·30 claims
- 0296US6500580B1Fuel cell fluid flow plate for promoting fluid servicePLUG POWER INC·Filed 2000·Granted Dec 31, 2002·67 cites·9 claims
- 0396US6219623B1Anti-islanding method and apparatus for distributed power generationPLUG POWER INC·Filed 1998·Granted Apr 17, 2001·563 cites·20 claims
- 0495US6810339B2Anti-islanding method and apparatus for distributed power generationPLUG POWER INC·Filed 2001·Granted Oct 26, 2004·268 cites·30 claims
- 0594US6455181B1Fuel cell system with sensorPLUG POWER INC·Filed 2000·Granted Sep 24, 2002·64 cites·24 claims
- 0694US6372372B1Clamping system for a fuel cell stackPLUG POWER INC·Filed 2000·Granted Apr 16, 2002·80 cites·17 claims
- 0793US11883779B2Method and system for electrochemically compressing gaseous hydrogenPLUG POWER INC·Filed 2021·Granted Jan 30, 2024·2 cites·18 claims
- 0893US6541148B1Manifold system for a fuel cell stackPLUG POWER INC·Filed 2000·Granted Apr 1, 2003·60 cites·7 claims
- 0993US6309769B1Carbon monoxide filter layerPLUG POWER INC·Filed 2000·Granted Oct 30, 2001·68 cites·79 claims
- 1093US6251534B1Fuel cell cascade flow systemPLUG POWER INC·Filed 1999·Granted Jun 26, 2001·66 cites·26 claims
- 1192US6071635AEasily-formable fuel cell assembly fluid flow plate having conductivity and increased non-conductive materialPLUG POWER INC·Filed 1998·Granted Jun 6, 2000·114 cites·85 claims
- 1291US7332236B2Method and apparatus for controlling a combined heat and power fuel cell systemPLUG POWER INC·Filed 2005·Granted Feb 19, 2008·8 cites·10 claims
- 1391US6649293B1Heatable end plate, fuel cell assembly, and method for operating a fuel cell assemblyPLUG POWER INC·Filed 2000·Granted Nov 18, 2003·47 cites·20 claims
- 1491US6492044B1Reactant conditioning for high temperature fuel cellsPLUG POWER INC·Filed 2000·Granted Dec 10, 2002·47 cites·11 claims
- 1591US6110612AStructure for common access and support of fuel cell stacksPLUG POWER INC·Filed 1999·Granted Aug 29, 2000·105 cites·44 claims
- 1690US7416800B2Method and apparatus for a combined fuel cell and hydrogen purification systemPLUG POWER INC·Filed 2006·Granted Aug 26, 2008·14 cites·10 claims
- 1790US6630263B1Fuel cell systems and methodsPLUG POWER INC·Filed 2000·Granted Oct 7, 2003·40 cites·25 claims
- 1890US6410176B1Voltage monitoring system for a fuel cell stackPLUG POWER INC·Filed 2000·Granted Jun 25, 2002·54 cites·50 claims
- 1990US6281684B1Technique and apparatus to measure cell voltages of a fuel cell stack using different ground referencesPLUG POWER INC·Filed 2000·Granted Aug 28, 2001·49 cites·29 claims
- 2090US6066408AFuel cell cooler-humidifier platePLUG POWER INC·Filed 1997·Granted May 23, 2000·103 cites·29 claims
- 2189US7691507B2Combination fuel cell and ion pump, and methods and infrastructure systems employing samePLUG POWER INC·Filed 2007·Granted Apr 6, 2010·13 cites·13 claims
- 2289US6682844B2Release valve and method for venting a systemPLUG POWER INC·Filed 2001·Granted Jan 27, 2004·69 cites·57 claims
- 2389US6174616B1Fuel cell assembly unit for promoting fluid service and design flexibilityPLUG POWER INC·Filed 1998·Granted Jan 16, 2001·81 cites·19 claims
- 2489US6140820AMeasuring cell voltages of a fuel cell stackPLUG POWER INC·Filed 1999·Granted Oct 31, 2000·77 cites·27 claims
- 2588US6939635B2Method and apparatus for controlling a combined heat and power fuel cell systemPLUG POWER INC·Filed 2002·Granted Sep 6, 2005·20 cites·4 claims
- 2688US6410179B1Fluid flow plate having a bridge piecePLUG POWER INC·Filed 2000·Granted Jun 25, 2002·82 cites·15 claims
- 2788US6096450AFuel cell assembly fluid flow plate having conductive fibers and rigidizing material thereinPLUG POWER INC·Filed 1998·Granted Aug 1, 2000·91 cites·24 claims
- 2887US12278410B2Integrated circuit for diagnosticsPLUG POWER INC·Filed 2024·Granted Apr 15, 2025·0 cites·19 claims
- 2987US7141323B2Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell systemPLUG POWER INC·Filed 2002·Granted Nov 28, 2006·31 cites·14 claims
- 3087US6835483B2Method and apparatus for controlling a combined heat and power fuel cell systemPLUG POWER INC·Filed 2002·Granted Dec 28, 2004·19 cites·31 claims
- 3187US6761987B2Fuel cell system having an energy source backupPLUG POWER INC·Filed 2001·Granted Jul 13, 2004·29 cites·16 claims
- 3287US6686080B2Fuel cell systemsPLUG POWER INC·Filed 2001·Granted Feb 3, 2004·43 cites·27 claims
- 3387US6514634B1Method and system for humidification of a fuelPLUG POWER INC·Filed 2000·Granted Feb 4, 2003·36 cites·41 claims
- 3486US12508542B2Method and system for electrochemically compressing gaseous hydrogenPLUG POWER INC·Filed 2023·Granted Dec 30, 2025·0 cites·19 claims
- 3586US6406807B1Distribution of hydration fluid in a fuel cellPLUG POWER INC·Filed 2000·Granted Jun 18, 2002·31 cites·7 claims
- 3685US7132182B2Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell systemPLUG POWER INC·Filed 2002·Granted Nov 7, 2006·31 cites·30 claims
- 3785US6740437B2Method and apparatus for controlling a combined heat and power fuel cell systemPLUG POWER INC·Filed 2002·Granted May 25, 2004·17 cites·49 claims
- 3885US6589678B1Fuel cell method of operationPLUG POWER INC·Filed 2000·Granted Jul 8, 2003·26 cites·37 claims
- 3985US6261711B1Sealing system for fuel cellsPLUG POWER INC·Filed 1999·Granted Jul 17, 2001·131 cites·21 claims
- 4084US7045233B2Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell systemPLUG POWER INC·Filed 2002·Granted May 16, 2006·29 cites·47 claims
- 4184US6881508B2Apparatus and method for controlling a fuel cell systemPLUG POWER INC·Filed 2002·Granted Apr 19, 2005·33 cites·40 claims
- 4284US6784135B2Thermal regulating catalyst compositionPLUG POWER INC·Filed 2003·Granted Aug 31, 2004·44 cites·21 claims
- 4384US6650968B2Technique to regulate an efficiency of a fuel cell systemPLUG POWER INC·Filed 2000·Granted Nov 18, 2003·25 cites·23 claims
- 4484US6498462B2Generator control system to accommodate a decrease in a power grid voltagePLUG POWER INC·Filed 2001·Granted Dec 24, 2002·67 cites·25 claims
- 4584US6451467B1Flow control subsystem for a fuel cell systemPLUG POWER INC·Filed 2000·Granted Sep 17, 2002·29 cites·23 claims
- 4684US6370878B1Recovering heat from fuel cell exhaustPLUG POWER INC·Filed 2000·Granted Apr 16, 2002·32 cites·32 claims
- 4784US6218039B1Clamping apparatus and method for a fuel cellPLUG POWER INC·Filed 1999·Granted Apr 17, 2001·104 cites·22 claims
- 4883US11679339B2High-output atmospheric water generatorPLUG POWER INC·Filed 2018·Granted Jun 20, 2023·15 cites·25 claims
- 4983US11608939B2Support structure for shortened cryogenic transport trailerPLUG POWER INC·Filed 2020·Granted Mar 21, 2023·2 cites·11 claims
- 5083US7264895B2Fuel cell thermal management systemPLUG POWER INC·Filed 2002·Granted Sep 4, 2007·26 cites·21 claims
Showing the top 50 of 188 patent records by PatentIndex Score.
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