1
Sekharipuram R Narayanan, William Chun, Barbara Jeffries Nakamura, Thomas I Valdez: Hydrogen generation by electrolysis of aqueous organic solutions. California Institute of Technology, Fish & Richardson P C, October 9, 2001: US06299744 (45 worldwide citation)

A device for electrolysis of an aqueous solution of an organic fuel. The electrolyte is a solid-state polymer membrane with anode and cathode catalysts on both surfaces for electro-oxidization and electro-reduction. A low-cost and portable hydrogen generator can be made based on the device with orga ...


2
Sekharipuram R Narayanan, William Chun, Barbara Jeffries Nakamura, Thomas I Valdez: Hydrogen generation by electrolysis of aqueous organic solutions. California Institute of Technology, Fish & Richardson P C, August 13, 2002: US06432284 (41 worldwide citation)

A device for electrolysis of an aqueous solution of an organic fuel. The electrolyte is a solid-state polymer membrane with anode and cathode catalysts on both surfaces for electro-oxidization and electro-reduction. A low-cost and portable hydrogen generator can be made based on the device with orga ...


3
Sekharipuram R Narayanan, Barbara Jeffries Nakamura, William Chun, Ron P Ruiz, Thomas I Valdez: Sputter-deposited fuel cell membranes and electrodes. California Institute of Technology, Fish & Richardson P C, January 9, 2001: US06171721 (28 worldwide citation)

A method for preparing a membrane for use in a fuel cell membrane electrode assembly includes the steps of providing an electrolyte membrane, and sputter-depositing a catalyst onto the electrolyte membrane. The sputter-deposited catalyst may be applied to multiple sides of the electrolyte membrane. ...


4
Sekharipuram R Narayanan, William Chun, Thomas I Valdez: Techniques for sensing methanol concentration in aqueous environments. California Institute of Technology, Fish & Richardson P C, October 23, 2001: US06306285 (27 worldwide citation)

An analyte concentration sensor that is capable of fast and reliable sensing of analyte concentration in aqueous environments with high concentrations of the analyte. Preferably, the present invention is a methanol concentration sensor device coupled to a fuel metering control system for use in a li ...


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Sekharipuram R Narayanan, William Chun, Barbara Jeffries Nakamura, Thomas I Valdez: Hydrogen generation by electrolysis of aqueous organic solutions. California Institute of Technology, Fish & Richardson P C, March 18, 2003: US06533919 (23 worldwide citation)

A method for electrolysis of an aqueous solution of an organic fuel. The electrolyte is a solid-state polymer membrane with anode and cathode catalysts on both surfaces for electro-oxidation and electro-reduction.


7
William Chun, Sekharipuram R Narayanan, Barbara Jeffries Nakamura, Thomas I Valdez, Juergen Linke: Direct deposit of catalyst on the membrane of direct feed fuel cells. California Institute of Technology, Fish & Richardson P C, April 24, 2001: US06221523 (23 worldwide citation)

An improved direct liquid-feed fuel cell having a solid membrane electrolyte for electrochemical reactions of an organic fuel. Catalyst utilization and catalyst/membrane interface improvements are disclosed. Specifically, the catalyst layer is applied directly onto the membrane electrolyte.


8
Sekharipuram R Narayanan, Thomas I Valdez, Filiberto Clara, Harvey A Frank: Reduced size fuel cell for portable applications. California Institute of Technology, Fish & Richardson P C, January 20, 2004: US06680139 (23 worldwide citation)

A flat pack type fuel cell includes a plurality of membrane electrode assemblies. Each membrane electrode assembly is formed of an anode, an electrolyte, and an cathode with appropriate catalysts thereon. The anode is directly into contact with fuel via a wicking element. The fuel reservoir may exte ...


9
Sekharipuram R Narayanan, William Chun, Barbara Jeffries Nakamura, Thomas I Valdez: Hydrogen generation by electrolysis of aqueous organic solutions. California Institute of Technology, Fish & Richardson PC, April 9, 2002: US06368492 (22 worldwide citation)

A device for electrolysis of an aqueous solution of an organic fuel. The electrolyte is a solid-state polymer membrane with anode and cathode catalysts on both surfaces for electro-oxidization and electro-reduction. A low-cost and portable hydrogen generator can be made based on the device with orga ...


10
Andrew Kindler, Sekharipuram R Narayanan, Thomas I Valdez: Aerosol feed direct methanol fuel cell. California Institute of Technology, Fish & Richardson P C, August 27, 2002: US06440594 (18 worldwide citation)

Improvements to fuel cells include introduction of the fuel as an aerosol of liquid fuel droplets suspended in a gas. The particle size of the liquid fuel droplets may be controlled for optimal fuel cell performance by selection of different aerosol generators or by separating droplets based upon si ...