Patents by Inventor Amy E. Hester

Amy E. Hester 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).

  • Publication number: 20200119365
    Abstract: Described herein is a plurality of acicular particles dispersed with ionomer binder, solvent, and a plurality of carbon particles in a composition. The acicular particles comprise a microstructured core with a layer of catalytic material on at least one portion of the surface of the microstructured core. The catalytic material comprises (i) platinum and/or (ii) at least one of iridium and ruthenium and the microstructured core comprises at least one of a polynuclear aromatic hydrocarbon and heterocyclic compounds.
    Type: Application
    Filed: May 29, 2018
    Publication date: April 16, 2020
    Inventors: Andrew T. Haug, John E. Abulu, Amy E. Hester, Andrew J.L. Steinbach
  • Publication number: 20190280309
    Abstract: Nanoporous oxygen reduction catalyst material comprising PtNiIr, the catalyst material preferably having the formula PtxNiyIrz, wherein x is in a range from 26.6 to 47.8, y is in a range from 48.7 to 70, and z is in a range from 1 to 11.4. The nanoporous oxygen reduction catalyst material is useful, for example, in fuel cell membrane electrode assemblies.
    Type: Application
    Filed: October 11, 2017
    Publication date: September 12, 2019
    Inventors: Andrew J.L. STEINBACH, Amy E. HESTER, Dennis F. VAN DER VLIET
  • Publication number: 20190273265
    Abstract: Catalyst (100) comprising nanostructured elements (102) comprising microstructured whiskers (104) having an outer surface (105) at least partially covered by a catalyst material (106) having the formula PtxNiyIrz, wherein x is in a range from 26.6 to 47.8, y is in a range from 48.7 to 70, and z is in a range from 1 to 11.4. Catalysts described herein are useful, for example, in fuel cell membrane electrode assemblies.
    Type: Application
    Filed: October 11, 2017
    Publication date: September 5, 2019
    Inventors: Andrew J. L. Steinbach, Amy E. Hester, Dennis F. Van Der Vliet
  • Publication number: 20190267638
    Abstract: Catalysts comprising nanostructured elements comprising microstructured whiskers having an outer surface at least partially covered by a catalyst material having the formula PtxNiyAuz, wherein x is in a range from 27.3 to 29.9, y is in a range from 63.0 to 70.0, and z is in a range from 0.1 to 9.6. Catalyst described herein are useful, for example, in fuel cell membrane electrode assemblies.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 29, 2019
    Inventors: Andrew J.L. Steinbach, Amy E. Hester, Dennis F. Van Der Vliet
  • Publication number: 20190260035
    Abstract: Nanoporous oxygen reduction catalyst material comprising PtNiAu. The nanoporous oxygen reduction catalyst material is useful, for example, in fuel cell membrane electrode assemblies.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 22, 2019
    Inventors: Andrew J.L. Steinbach, Amy E. Hester, Dennis F. Van Der Vliet
  • Publication number: 20140349215
    Abstract: Electrochemical cell electrode (100) comprising a nanostructured catalyst support layer (102) having first and second generally opposed major sides (103,104). The first side (103) comprises nanostructured elements (106) comprising support whiskers (108) projecting away from the first side (103). The support whiskers (108) have a first nanoscopic electrocatalyst layer (110) thereon, and a second nanoscopic electrocatalyst layer (112) on the second side (104) comprising a precious metal alloy. Electrochemical cell electrodes (100) described herein are useful, for example, as a fuel cell catalyst electrode for a fuel cell.
    Type: Application
    Filed: December 19, 2012
    Publication date: November 27, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mark K. Debe, Amy E. Hester
  • Patent number: 7901829
    Abstract: A membrane electrode subassembly includes an ion conducting membrane and a microporous layer having microtextured surfaces. Complementary features of the microtextured surfaces may be formed as grooves, ridges, pyramids or other shapes. Features of the microtextured surface of the ion conducting membrane engage features of the microporous layer. The engagement of the features of the microtextured surfaces may involve an interlocking fit, a tongue and groove fit, or another type of engagement. A thin catalyst layer is disposed between the microtextured surfaces. The microtextured surfaces increase the surface area at the catalyst layer interfaces.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: March 8, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Mark K. Debe, Amy E. Hester