Inventor · disambiguated record
Steven D. Pratt
Also filed as: PRATT STEVEN D · PRATT STEVEN DUANE
40 granted patents·16 pending applications·1,812 citations·filing 1994–2006
98Inventor score
Top patents by PatentIndex Score
56 records- 0198US6268077B1Portable fuel cell power supplyMOTOROLA INC·Filed 1999·Granted Jul 31, 2001·289 cites·22 claims
- 0298US6127058APlanar fuel cellMOTOROLA INC·Filed 1998·Granted Oct 3, 2000·280 cites·23 claims
- 0396US6406808B1Method and apparatus for thermal management of fuel cell systemsMOTOROLA INC·Filed 2000·Granted Jun 18, 2002·87 cites·22 claims
- 0495US6699611B2Fuel cell having a thermo-responsive polymer incorporated thereinMOTOROLA INC·Filed 2001·Granted Mar 2, 2004·100 cites·17 claims
- 0595US6080501AFuel cell with integral fuel storageMOTOROLA INC·Filed 1998·Granted Jun 27, 2000·161 cites·18 claims
- 0694US5681515AMethod of fabricating an elastomeric keypadMOTOROLA INC·Filed 1996·Granted Oct 28, 1997·94 cites·9 claims
- 0792US5937265ATooling die insert and rapid method for fabricating sameMOTOROLA INC·Filed 1997·Granted Aug 10, 1999·78 cites·14 claims
- 0888US6426158B1Method of diluting hydrogen gas exhausted from a fuel cellMOTOROLA INC·Filed 2000·Granted Jul 30, 2002·32 cites·8 claims
- 0987US6584825B2Method and apparatus for determining the amount of hydrogen in a vesselMOTOROLA INC·Filed 2001·Granted Jul 1, 2003·34 cites·24 claims
- 1086US6423434B1Method and apparatus for managing fuel cell performanceMOTOROLA INC·Filed 1999·Granted Jul 23, 2002·83 cites·28 claims
- 1185US6214487B1Integral sensors for monitoring a fuel cell membrane and methods of monitoringMOTOROLA INC·Filed 1999·Granted Apr 10, 2001·81 cites·25 claims
- 1285US6060188AHigh pressure coaxial fuel cellMOTOROLA INC·Filed 1998·Granted May 9, 2000·78 cites·23 claims
- 1384US6586124B2Method and apparatus for cold temperature operation of fuel cells utilizing hydrides having different heat capacitiesMOTOROLA INC·Filed 2001·Granted Jul 1, 2003·24 cites·10 claims
- 1484US6132895AFuel cellMOTOROLA INC·Filed 1998·Granted Oct 17, 2000·76 cites·17 claims
- 1583US6689194B2Fuel cell system having a replaceable getter element for purifying the fuel supplyMOTOROLA INC·Filed 2001·Granted Feb 10, 2004·21 cites·12 claims
- 1683US6176953B1Ultrasonic welding processMOTOROLA INC·Filed 1999·Granted Jan 23, 2001·48 cites·11 claims
- 1779US5662946AAdaptable mold baseMOTOROLA INC·Filed 1994·Granted Sep 2, 1997·41 cites·11 claims
- 1878US7132192B2Fuel cell using variable porosity gas diffusion materialMOTOROLA INC·Filed 2003·Granted Nov 7, 2006·14 cites·8 claims
- 1978US5818005AElectrical discharge machining electrode and rapid method for fabricating sameMOTOROLA INC·Filed 1997·Granted Oct 6, 1998·37 cites·5 claims
- 2077US6869708B2Means for measuring the liquid level in a reservoir for a fuel cellMOTOROLA INC·Filed 2003·Granted Mar 22, 2005·18 cites·3 claims
- 2173US6936361B2Method for humidifying a fuel stream for a direct methanol fuel cellMOTOROLA INC·Filed 2003·Granted Aug 30, 2005·10 cites·3 claims
- 2269US6743543B2Fuel cell using variable porosity gas diffusion materialMOTOROLA INC·Filed 2001·Granted Jun 1, 2004·7 cites·5 claims
- 2368US5977690APiezoelectric switch apparatus for a communication deviceMOTOROLA INC·Filed 1997·Granted Nov 2, 1999·21 cites·22 claims
- 2466US7049015B2Method of operating a fuel cell power sourceMOTOROLA INC·Filed 2002·Granted May 23, 2006·6 cites·12 claims
- 2566US6756142B2Fuel cell using non-linear positive temperature coefficient materialMOTOROLA INC·Filed 2001·Granted Jun 29, 2004·5 cites·15 claims
- 2664US7282283B2Method and device for limiting crossover in fuel cell systemsMOTOROLA INC·Filed 2002·Granted Oct 16, 2007·5 cites·13 claims
- 2764US7184756B2Wireless communication device with tamper resistant configuration settingsMOTOROLA INC·Filed 2003·Granted Feb 27, 2007·6 cites·22 claims
- 2861US6853368B2Electronic device with improved user interfaceMOTOROLA INC·Filed 2002·Granted Feb 8, 2005·5 cites·26 claims
- 2961US6322918B1Water management system for fuel cellsMOTOROLA INC·Filed 1999·Granted Nov 27, 2001·29 cites·9 claims
- 3058US7108931B2Fuel cell using non-linear positive temperature coefficient materialMOTOROLA INC·Filed 2004·Granted Sep 19, 2006·2 cites·3 claims
- 3156US6986957B2Fuel cell systemMOTOROLA INC·Filed 2002·Granted Jan 17, 2006·2 cites·21 claims
- 3255US7264896B2Two-stage hybrid gas pressure regulatorMOTOROLA INC·Filed 2002·Granted Sep 4, 2007·1 cites·22 claims
- 3353US6015970ASwitch assembly incorporating optical control functionMOTOROLA INC·Filed 1997·Granted Jan 18, 2000·16 cites·19 claims
- 3452US2005035003A1Gas storage media, containers, and battery employing the mediaFiled 2004·Application pending·0 cites
- 3552US2005053836A1Gas storage media, containers, and battery employing the mediaFiled 2004·Application pending·0 cites
- 3651US2007167689A1Method and system for enhancing a user experience using a user's physiological stateMOTOROLA INC·Filed 2006·Application pending·0 cites
- 3750US8993187B2Method and device for limiting crossover in fuel cell systemsKELLEY RONALD JAMES·Filed 2005·Granted Mar 31, 2015·0 cites·6 claims
- 3849US2008145736A1Fluid Distribution Device for Fuel Cell Power SystemsPRATT STEVEN D·Filed 2006·Application pending·0 cites
- 3948US6926990B2Fuel cell having porous electrodes and method for forming sameMOTOROLA INC·Filed 2002·Granted Aug 9, 2005·0 cites·17 claims
- 4048US2006224046A1Method and system for enhancing a user experience using a user's physiological stateMOTOROLA INC·Filed 2005·Application pending·0 cites
- 4148US2004096607A1Gas storage media, containers, and battery employing the mediaFiled 2002·Application pending·0 cites
- 4247US2003147527A1Device housing responsive to an environmental stimulusFiled 2002·Application pending·0 cites
- 4347US2004204151A1Method and apparatus for advising a user of a wireless device as to a connection status thereofFiled 2002·Application pending·0 cites
- 4447US2004203525A1Electronic device having two-sided keypad and method of forming sameMOTOROLA INC·Filed 2002·Application pending·0 cites
- 4546USD537742STracking deviceMOTOROLA INC·Filed 2005·Granted Mar 6, 2007·6 cites·1 claims
- 4646US2005036605A1Device housing responsive to an environmental stimulusFiled 2004·Application pending·0 cites
- 4746US2003210780A1Device housing having one or more optical fibersFiled 2002·Application pending·0 cites
- 4844USD456374SRemovable cover for a portable radioMOTOROLA INC·Filed 2001·Granted Apr 30, 2002·5 cites·1 claims
- 4943US2004023082A1Fuel cell having activation mechanism and method for forming sameFiled 2002·Application pending·0 cites
- 5043US2004023096A1Fuel cell system having a filter element for purifying ambient environmental airFiled 2002·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
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