Patents by Inventor Mark Raymond Etzel

Mark Raymond Etzel 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).

  • DIFFUSION TRANSFER FUNCTIONALIZED MEMBRANE
    Publication number: 20230338902
    Abstract: A method of making a filter, the resulting filter, and a method of using the filter to filter proteins from solution are described. The method includes contacting a porous, polymeric substrate with a transfer liquid comprising a solvent(s) and a charged polymeric solute. The transfer liquid and the polymeric substrate have a Hansen Solubility Parameter (“HSP”) distance of from about 10 to about 35. Contacting the polymeric substrate with the transfer solution causes the polymeric substrate to accept the charged polymeric solute by diffusion transfer, thereby yielding a functionalized filter medium. Removal of the transfer liquid from the polymeric substrate traps the charged polymeric solute on the surface of the polymeric substrate.
    Type: Application
    Filed: July 5, 2023
    Publication date: October 26, 2023
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Mark Raymond Etzel, Na Li
  • Diffusion transfer functionalized membrane
    Patent number: 11731084
    Abstract: A method of making a filter, the resulting filter, and a method of using the filter to filter proteins from solution are described. The method includes contacting a porous, polymeric substrate with a transfer liquid comprising a solvent(s) and a charged polymeric solute. The transfer liquid and the polymeric substrate have a Hansen Solubility Parameter (“HSP”) distance of from about 10 to about 35. Contacting the polymeric substrate with the transfer solution causes the polymeric substrate to accept the charged polymeric solute by diffusion transfer, thereby yielding a functionalized filter medium. Removal of the transfer liquid from the polymeric substrate traps the charged polymeric solute on the surface of the polymeric substrate.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: August 22, 2023
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Mark Raymond Etzel, Na Li
  • DIFFUSION TRANSFER FUNCTIONALIZED MEMBRANE
    Publication number: 20200147557
    Abstract: A method of making a filter, the resulting filter, and a method of using the filter to filter proteins from solution are described. The method includes contacting a porous, polymeric substrate with a transfer liquid comprising a solvent(s) and a charged polymeric solute. The transfer liquid and the polymeric substrate have a Hansen Solubility Parameter (“HSP”) distance of from about 10 to about 35. Contacting the polymeric substrate with the transfer solution causes the polymeric substrate to accept the charged polymeric solute by diffusion transfer, thereby yielding a functionalized filter medium. Removal of the transfer liquid from the polymeric substrate traps the charged polymeric solute on the surface of the polymeric substrate.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 14, 2020
    Inventors: Mark Raymond Etzel, Na Li