Inventor · disambiguated record
Sekharipuram R. Narayanan
Also filed as: NARAYANAN SEKHARIPURAM · NARAYANAN SEKHARIPURAM R
45 granted patents·11 pending applications·2,722 citations·filing 1993–2014
99Inventor score
Files withCALIFORNIA INST OF TECHN45NARAYANAN SEKHARIPURAM R2UNIV SOUTHERN CALIFORNIA2CALIFORNIA INSTITUITE OF TECHN1HAILE SOSSINA M1
Top patents by PatentIndex Score
56 records- 0199US6432284B1Hydrogen generation by electrolysis of aqueous organic solutionsCALIFORNIA INST OF TECHN·Filed 2000·Granted Aug 13, 2002·82 cites·25 claims
- 0298US6533919B1Hydrogen generation by electrolysis of aqueous organic solutionsCALIFORNIA INST OF TECHN·Filed 2000·Granted Mar 18, 2003·68 cites·4 claims
- 0398US6368492B1Hydrogen generation by electrolysis of aqueous organic solutionsCALIFORNIA INST OF TECHN·Filed 2000·Granted Apr 9, 2002·60 cites·15 claims
- 0498US6299744B1Hydrogen generation by electrolysis of aqueous organic solutionsCALIFORNIA INST OF TECHN·Filed 1998·Granted Oct 9, 2001·103 cites·25 claims
- 0598US5945231ADirect liquid-feed fuel cell with membrane electrolyte and manufacturing thereofCALIFORNIA INST OF TECHN·Filed 1997·Granted Aug 31, 1999·245 cites·14 claims
- 0698US5773162ADirect methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1995·Granted Jun 30, 1998·245 cites·29 claims
- 0798US5599638AAqueous liquid feed organic fuel cell using solid polymer electrolyte membraneCALIFORNIA INST OF TECHN·Filed 1993·Granted Feb 4, 1997·407 cites·49 claims
- 0896US6265093B1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1999·Granted Jul 24, 2001·115 cites·14 claims
- 0995US6468684B1Proton conducting membrane using a solid acidCALIFORNIA INST OF TECHN·Filed 1999·Granted Oct 22, 2002·73 cites·11 claims
- 1095US6303244B1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1999·Granted Oct 16, 2001·98 cites·7 claims
- 1193US7056428B2Hydrogen generation by electrolysis of aqueous organic solutionsCALIFORNIA INST OF TECHN·Filed 2003·Granted Jun 6, 2006·24 cites·30 claims
- 1293US6420059B1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1999·Granted Jul 16, 2002·76 cites·2 claims
- 1392US6440594B1Aerosol feed direct methanol fuel cellCALIFORNIA INST OF TECHN·Filed 2000·Granted Aug 27, 2002·49 cites·30 claims
- 1492US6221523B1Direct deposit of catalyst on the membrane of direct feed fuel cellsCALIFORNIA INST OF TECHN·Filed 1998·Granted Apr 24, 2001·60 cites·5 claims
- 1591US6680139B2Reduced size fuel cell for portable applicationsCALIFORNIA INST OF TECHN·Filed 2001·Granted Jan 20, 2004·49 cites·10 claims
- 1691US6444343B1Polymer electrolyte membranes for use in fuel cellsUNIV SOUTHERN CALIFORNIA·Filed 1997·Granted Sep 3, 2002·143 cites·14 claims
- 1791US5795496APolymer material for electrolytic membranes in fuel cellsCALIFORNIA INST OF TECHN·Filed 1995·Granted Aug 18, 1998·163 cites·19 claims
- 1889US7125621B2Proton conducting membrane using a solid acidCALIFORNIA INST OF TECHN·Filed 2002·Granted Oct 24, 2006·22 cites·43 claims
- 1989US6740434B2Organic fuel cell methods and apparatusCALIFORNIA INST OF TECHN·Filed 2001·Granted May 25, 2004·25 cites·34 claims
- 2089US6391486B1Fabrication of a membrane having catalyst for a fuel cellCALIFORNIA INST OF TECHN·Filed 1999·Granted May 21, 2002·65 cites·22 claims
- 2189US6254748B1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1999·Granted Jul 3, 2001·59 cites·7 claims
- 2289US6248460B1Organic fuel cell methods and apparatusCALIFORNIA INST OF TECHN·Filed 1995·Granted Jun 19, 2001·67 cites·13 claims
- 2388US6146781ADirect methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1998·Granted Nov 14, 2000·56 cites·14 claims
- 2487US6171721B1Sputter-deposited fuel cell membranes and electrodesCALIFORNIA INST OF TECHN·Filed 1998·Granted Jan 9, 2001·93 cites·61 claims
- 2586US7416809B2Catalyst materials for fuel cellsCALIFORNIA INST OF TECHN·Filed 2006·Granted Aug 26, 2008·6 cites·3 claims
- 2686US6821659B2Organic fuel cell methods and apparatusCALIFORNIA INST OF TECHN·Filed 2001·Granted Nov 23, 2004·17 cites·29 claims
- 2783US6703150B2Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 2001·Granted Mar 9, 2004·15 cites·26 claims
- 2883US6306285B1Techniques for sensing methanol concentration in aqueous environmentsCALIFORNIA INST OF TECHN·Filed 1998·Granted Oct 23, 2001·62 cites·31 claims
- 2981US7695849B2Low Pt content direct methanol fuel cell anode catalyst: nanophase PtRuNiZrCALIFORNIA INST OF TECHN·Filed 2005·Granted Apr 13, 2010·4 cites·7 claims
- 3081US6277447B1Direct deposit of catalyst on the membrane of direct feed fuel cellsCALIFORNIA INST OF TECHN·Filed 1999·Granted Aug 21, 2001·31 cites·3 claims
- 3180US8183174B2IR-doped ruthenium oxide catalyst for oxygen evolutionVALDEZ THOMAS I·Filed 2009·Granted May 22, 2012·5 cites·20 claims
- 3280US6485851B1Power generation in fuel cells using liquid methanol and hydrogen peroxideCALIFORNIA INST OF TECHN·Filed 1998·Granted Nov 26, 2002·60 cites·23 claims
- 3376US6756145B2Electrode and interconnect for miniature fuel cells using direct methanol feedCALIFORNIA INST OF TECHN·Filed 2001·Granted Jun 29, 2004·16 cites·14 claims
- 3474US7416803B2Solid acid electrolytes for electrochemical devicesCALIFORNIA INST OF TECHN·Filed 2002·Granted Aug 26, 2008·9 cites·32 claims
- 3570US6589684B1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 1999·Granted Jul 8, 2003·24 cites·2 claims
- 3669US8202663B2Solid acid electrolytes for electrochemical devicesHAILE SOSSINA M·Filed 2008·Granted Jun 19, 2012·1 cites·18 claims
- 3764US2014255807A1Direct methanol fuel cell operable with neat methanolCALIFORNIA INST OF TECHN·Filed 2014·Application pending·0 cites
- 3861US7470478B2Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 2004·Granted Dec 30, 2008·2 cites·46 claims
- 3961US7425384B2Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 2004·Granted Sep 16, 2008·2 cites·7 claims
- 4061US7108934B2Proton conducting membranes for high temperature fuel cells with solid state “water free” membranesCALIFORNIA INSTITUITE OF TECHN·Filed 2003·Granted Sep 19, 2006·7 cites·3 claims
- 4159US2007009778A1Proton conducting membrane using a solid acidCALIFORNIA INST OF TECHN·Filed 2006·Application pending·0 cites
- 4259US2009214905A1Direct methanol fuel cell operable with neat methanolCALIFORNIA INST OF TECHN·Filed 2008·Application pending·0 cites
- 4358US2006204810A1Organic fuel cell methods and apparatusSURAMPUDI SUBBARAO·Filed 2006·Application pending·0 cites
- 4457US7147958B2Membrane electrode assembly for a fuel cellUNIV SOUTHERN CALIFORNIA·Filed 2001·Granted Dec 12, 2006·4 cites·8 claims
- 4557US2006105210A1Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 2005·Application pending·0 cites
- 4653US7585577B2Monopolar fuel cell stack coupled together without use of top or bottom cover plates or tie rodsCALIFORNIA INST OF TECHN·Filed 2003·Granted Sep 8, 2009·1 cites·7 claims
- 4751US7488548B2Direct methanol feed fuel cell and systemCALIFORNIA INST OF TECHN·Filed 2004·Granted Feb 10, 2009·0 cites·14 claims
- 4850US7445859B2Organic fuel cell methods and apparatusCALIFORNIA INST OF TECHN·Filed 2004·Granted Nov 4, 2008·0 cites·41 claims
- 4950US7282291B2Water free proton conducting membranes based on poly-4-vinylpyridinebisulfate for fuel cellsCALIFORNIA INST OF TECHN·Filed 2003·Granted Oct 16, 2007·2 cites·13 claims
- 5048US2004166397A1Cathode structure for direct methanol fuel cellFiled 2003·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →