Patents by Inventor Chandresh Nemchand Malde

Chandresh Nemchand Malde 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).

  • Polymer dispersion and electrocatalyst ink
    Patent number: 9127182
    Abstract: A polymer dispersion comprising one or more proton-conducting polymer materials in a liquid medium, and an electrocatalyst ink comprising one or more electrocatalyst materials and one or more proton-conducting polymer materials in a liquid medium are disclosed. The polymer dispersion and the electrocatalyst ink further comprise a protic acid. Electrocatalyst layers, gas diffusion electrodes, catalyzed membranes and membrane electrode assemblies prepared using the dispersion and/or the ink are also disclosed.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: September 8, 2015
    Assignee: JOHNSON MATTHEY FUEL CELLS LIMITED
    Inventors: Dharshini Chryshantha Fongalland, Pamela Kapila, Chandresh Nemchand Malde, Michael Ian Petch
  • Polymer Dispersion and Electrocatalyst Ink
    Publication number: 20080292943
    Abstract: A polymer dispersion comprising one or more proton-conducting polymer materials in a liquid medium, and an electrocatalyst ink comprising one or more electrocatalyst materials and one or more proton-conducting polymer materials in a liquid medium are disclosed. The polymer dispersion and the electrocatalyst ink further comprise a protic acid. Electrocatalyst layers, gas diffusion electrodes, catalysed membranes and membrane electrode assemblies prepared using the dispersion and/or the ink are also disclosed.
    Type: Application
    Filed: May 16, 2006
    Publication date: November 27, 2008
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Dharshini Chryshantha Fongalland, Pamela Kapila, Chandresh Nemchand Malde, Michael Ian Petch
  • Coatings
    Patent number: 6927189
    Abstract: A substrate, such as a plate or catalyst monolith, may be coated with a metal oxide, particularly with a zeolite, by treating the substrate with a polyectrolyte to form a coating, and then depositing the coating of metal oxide from an aqueous slurry. A continuous coating, which may incorporate many layers, can easily be formed. In the examples polyacrylamide is used as polyelectrolyte.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: August 9, 2005
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Francisco Lanzuela de Alvaro, Chandresh Nemchand Malde, Michael Ian Petch
  • Coated materials
    Patent number: 6033458
    Abstract: A substantially complete coating of a zeolite onto a material such as catalyst particles can be achieved by treating the material prior to or simultaneously with zeolite formation, with a polyelectrolye. Copper catalyst systems show good hydrogen storage while blocking access of hydrocarbons to the catalyst.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: March 7, 2000
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Katharine Elizabeth Goodman, John William Hayes, Chandresh Nemchand Malde, Michael Ian Petch