Patents by Inventor Timothy James Peckham

Timothy James Peckham 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).

  • Stable poly(imidazolium) hydroxides
    Patent number: 11299464
    Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.
    Type: Grant
    Filed: July 29, 2017
    Date of Patent: April 12, 2022
    Assignee: Simon Fraser University
    Inventors: Steven Holdcroft, Jiantao Fan, Andrew Wright, Benjamin Britton, Thomas Weissbach, Timothy James Peckham, Jonathan William Ward
  • Crosslinking of hydroxide stable, polybenzimidazoliums and polyimidazoliums membranes and ionomers
    Patent number: 11230626
    Abstract: Described herein are crosslinked alkylated poly(benzimidazole) and poly(imidazole) polymer materials and devices (e.g., fuel cells, water electrolyzers) including these polymer materials. The polymer materials can be prepared in a convenient manner, allowing for applications such as anion exchange membranes (AEMs). The membranes provide high anion conductivities over a wider range of operating conditions when compared to the analogous membranes that are not cross-linked. The crosslinked polymer materials have improved alkaline stability, when compared to the analogous non-crosslinked polymer materials.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: January 25, 2022
    Assignee: Simon Fraser University
    Inventors: Steven Holdcroft, Thomas Weissbach, Timothy James Peckham, Andrew Wright, Benjamin Britton
  • Stable Poly(imidazolium) Hydroxides
    Publication number: 20190382353
    Abstract: Provided herein are imidazolium polymers having steric hindrance at the 4-position of the imidazole moieties in the polymeric chain. The sterically-protected, N-methylated imidazolium polymers exhibit hydroxide stability in concentrated caustic solutions at elevated temperatures, such as at 100° C. and higher.
    Type: Application
    Filed: July 29, 2017
    Publication date: December 19, 2019
    Applicant: Simon Fraser University
    Inventors: Steven Holdcroft, Jiantao Fan, Andrew Wright, Benjamin Britton, Thomas Weissbach, Timothy James Peckham, Jonathan William Ward
  • Crosslinking of Hydroxide Stable, Polybenzimidazoliums and Polyimidazoliums Membranes and Ionomers
    Publication number: 20190169372
    Abstract: Described herein are crosslinked alkylated poly(benzimidazole) and poly(imidazole) polymer materials and devices (e.g., fuel cells, water electrolyzers) including these polymer materials. The polymer materials can be prepared in a convenient manner, allowing for applications such as anion exchange membranes (AEMs). The membranes provide high anion conductivities over a wider range of operating conditions when compared to the analogous membranes that are not cross-linked. The crosslinked polymer materials have improved alkaline stability, when compared to the analogous non-crosslinked polymer materials.
    Type: Application
    Filed: August 1, 2017
    Publication date: June 6, 2019
    Applicant: Simon Fraser University
    Inventors: Steven Holdcroft, Thomas Weissbach, Timothy James Peckham, Andrew Wright, Benjamin Britton