Patents by Inventor Craig Medforth

Craig Medforth 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).

  • Photocatalytic methods for preparation of electrocatalyst materials
    Patent number: 8541146
    Abstract: The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in polymer electrolyte membrane fuel cells (PEM-FCs).
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: September 24, 2013
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Motor Corporation, Sandia Corporation, Operator of Sandia National Laboratories
    Inventors: Wen Li, Tetsuo Kawamura, Tetsuo Nagami, Hiroaki Takahashi, John Muldoon, John A. Shelnutt, Yujiang Song, James E. Miller, Michael A. Hickner, Craig Medforth
  • Photocatalytic methods for preparation of electrocatalyst materials
    Publication number: 20060251953
    Abstract: The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in polymer electrolyte membrane fuel cells (PEM-FCs).
    Type: Application
    Filed: January 11, 2006
    Publication date: November 9, 2006
    Applicant: Toyota Technical Center USA, Inc.
    Inventors: Wen Li, Tetsuo Kawamura, Tetsuo Nagami, Hiroaki Takahashi, John Muldoon, John Shelnutt, Yujiang Song, James Miller, Michael Hickner, Craig Medforth
  • Nickel porphyrins for memory optical applications
    Patent number: 6117369
    Abstract: The present invention relates to a nickel-porphyrin derivative in a matrix, the nickel-porphyrin derivative comprising at least two conformational isomers, a lower-energy-state conformer and a higher-energy-state conformer, such that when the higher-energy-state conformer is generated from the lower-energy-state conformer following absorption of a photon of suitable energy, the time to return to the lower-energy-state conformer is greater than 40 nanoseconds at approximately room temperature. The nickel-porphyrin derivative is useful in optical memory applications.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: September 12, 2000
    Assignee: Sandia Corporation
    Inventors: John A. Shelnutt, Songling Jia, Craig Medforth, Dewey Holten, Nora Y. Nelson, Kevin M. Smith