Patents by Inventor Keith James Cendak

Keith James Cendak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Platinum-copper-nickel fuel cell catalyst
    Patent number: 7811965
    Abstract: A composition for use as a catalyst in, for example, a fuel cell, the composition comprising platinum, copper, and nickel, wherein the concentration of platinum therein is greater than 50 atomic percent and less than 80 atomic percent, and further wherein the sum of the concentrations of platinum, copper and nickel is greater than 95 atomic percent.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: October 12, 2010
    Assignees: Symyx Solutions, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Keith James Cendak, Alexander Gorer, Peter Strasser, Martin Devenney, Qun Fan, Konstantinos Chondroudis, Daniel M. Giaquinta, Kenta Urata, Hiroyuki Oyanagi
  • Platinum-copper fuel cell catalyst
    Patent number: 7700521
    Abstract: The present invention is directed to a composition for use as a catalyst in, for example, a fuel cell, the composition comprising platinum and copper, wherein the concentration of platinum is greater than 50 atomic percent and less than about 80 atomic percent, and further wherein the composition has a particle size which is less than 35 angstroms. The present invention is further directed to various methods for preparing such a composition.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: April 20, 2010
    Assignees: Symyx Solutions, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Daniel M. Giaquinta, Peter Strasser, Alexander Gorer, Martin Devenney, Hiroyuki Oyanagi, Kenta Urata, Hiroichi Fukuda, Keith James Cendak, Konstantinos Chondroudis
  • Platinum-chromium-copper/nickel fuel cell catalyst
    Patent number: 7662740
    Abstract: A fuel cell catalyst comprising platinum, chromium, and copper, nickel or a combination thereof. In one or more embodiments, the concentration of platinum is less than 50 atomic percent, and/or the concentration of chromium is less than 30 atomic percent, and/or the concentration of copper, nickel, or a combination thereof is at least 35 atomic percent.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: February 16, 2010
    Assignees: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Konstantinos Chondroudis, Alexander Gorer, Martin Devenney, Ting He, Hiroyuki Oyanagi, Daniel M. Giaquinta, Kenta Urata, Hiroichi Fukuda, Qun Fan, Peter Strasser, Keith James Cendak, Jennifer N. Cendak, legal representative
  • Platinum-titanium-tungsten fuel cell catalyst
    Patent number: 7608560
    Abstract: A fuel cell catalyst comprising platinum, titanium and tungsten. In one or more embodiments, the concentration of platinum is less than 60 atomic percent, and/or the concentration of titanium is at least 20 atomic percent, and/or the concentration of tungsten is at least 25 atomic percent.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: October 27, 2009
    Assignees: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Qun Fan, Peter Strasser, Alexander Gorer, Martin Devenney, Ting He, Hiroyuki Oyanagi, Daniel M. Giaquinta, Kenta Urata, Hiroichi Fukuda, Konstantinos Chondroudis, Keith James Cendak
  • Platinum-copper-tungsten fuel cell catalyst
    Patent number: 7422994
    Abstract: A composition for use as a catalyst in, for example, a fuel cell, the composition comprising platinum, copper and tungsten, or an oxide, carbide and/or salt of one or more of platinum, copper and tungsten, wherein the sum of the concentrations of platinum, copper and tungsten, or an oxide, carbide and/or salt thereof, is greater than 90 atomic percent.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: September 9, 2008
    Assignees: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Konstantinos Chondroudis, Alexander Gorer, Peter Strasser, Martin Devenney, Qun Fan, Daniel M. Giaquinta, Keith James Cendak, Hiroyuki Oyanagi, Kenta Urata
  • Platinum-Nickel-Iron Fuel Cell Catalyst
    Publication number: 20080166623
    Abstract: The present invention is directed to a composition for use as a catalyst in, for example, a fuel cell, the composition comprising platinum, nickel, and iron, wherein (i) the concentration of platinum is greater than 50 atomic percent, the concentration of nickel is less than 15 atomic percent and/or the concentration of iron is greater than 30 atomic percent, or (ii) the concentration of platinum is greater than 70 atomic percent and less than about 90 atomic percent. The present invention is further directed to a process for preparing such a catalyst composition from a catalyst precursor composition comprising platinum, nickel, and iron, wherein the concentration of platinum therein is less than 50 atomic percent.
    Type: Application
    Filed: September 3, 2004
    Publication date: July 10, 2008
    Applicants: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Keith James Cendak, Jennifer N. Cendak, Peter Strasser, Alexander Gorer, Martin Devenney, Ting He, Hiroyuki Oyanagi, Qun Fan, Konstantinos Chondroudis, Daniel M. Giaquinta, Kenta Urata, Kazuhiko Iwasaki, Hiroichi Fukuda