Patents by Inventor Andrew Wimer

Andrew Wimer 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).

  • Patent number: 12187862
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: January 7, 2025
    Assignee: Amtek Research International LLC
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer
  • Publication number: 20240006624
    Abstract: This disclosure relates to free-standing, composite membranes that include an ion-selective polymer coating that covers at least one surface and partially penetrates into the pore structure of a polyolefin substrate. While the composite membranes do not have open, interconnected pores that connect each major surface, ion transport can take place through wetting of available pores and swelling of the ion-selective polymer coating accompanied by ion migration from one membrane surface to the opposite surface. Such composite membranes are useful for separating the anolyte and catholyte in a flow battery.
    Type: Application
    Filed: December 6, 2021
    Publication date: January 4, 2024
    Inventors: Daniel Wandera, Robert Waterhouse, Andrew Wimer, Richard W. Pekala, Haley Heron
  • Publication number: 20210309815
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Application
    Filed: March 17, 2021
    Publication date: October 7, 2021
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer
  • Patent number: 10975208
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: April 13, 2021
    Assignee: AMTEK RESEARCH INTERNATIONAL LLC
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer
  • Publication number: 20180248164
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Application
    Filed: November 14, 2017
    Publication date: August 30, 2018
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer
  • Patent number: 9847519
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 19, 2017
    Assignee: AMTEK RESEARCH INTERNATIONAL LLC
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer
  • Publication number: 20160028067
    Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
    Type: Application
    Filed: March 17, 2014
    Publication date: January 28, 2016
    Inventors: Richard W. Pekala, Daniel K. Lee, James E. Emanuel, Robert Waterhouse, Weston J. Wood, Andrew Wimer