Patents by Inventor Susan J. Altman

Susan J. Altman 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).

  • Methods for attaching polymerizable ceragenins to water treatment membranes using amine and amide linkages
    Patent number: 8557031
    Abstract: This invention relates to methods for chemically grafting and attaching ceragenin molecules to polymer substrates; methods for synthesizing ceragenin-containing copolymers; methods for making ceragenin-modified water treatment membranes and spacers; and methods of treating contaminated water using ceragenin-modified treatment membranes and spacers. Ceragenins are synthetically produced antimicrobial peptide mimics that display broad-spectrum bactericidal activity. Alkene-functionalized ceragenins (e.g., acrylamide-functionalized ceragenins) can be attached to polyamide reverse osmosis membranes using amine-linking, amide-linking, UV-grafting, or silane-coating methods. In addition, silane-functionalized ceragenins can be directly attached to polymer surfaces that have free hydroxyls.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: October 15, 2013
    Assignee: Sandia Corporation
    Inventors: Michael Hibbs, Susan J. Altman, Howland D. T. Jones, Paul B. Savage
  • Methods for attaching polymerizable ceragenins to water treatment membranes using silane linkages
    Patent number: 8530002
    Abstract: This invention relates to methods for chemically grafting and attaching ceragenin molecules to polymer substrates; methods for synthesizing ceragenin-containing copolymers; methods for making ceragenin-modified water treatment membranes and spacers; and methods of treating contaminated water using ceragenin-modified treatment membranes and spacers. Ceragenins are synthetically produced antimicrobial peptide mimics that display broad-spectrum bactericidal activity. Alkene-functionalized ceragenins (e.g., acrylamide-functionalized ceragenins) can be attached to polyamide reverse osmosis membranes using amine-linking, amide-linking, UV-grafting, or silane-coating methods. In addition, silane-functionalized ceragenins can be directly attached to polymer surfaces that have free hydroxyls.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: September 10, 2013
    Assignee: Sandia Corporation
    Inventors: Michael Hibbs, Susan J. Altman, Howland D. T. Jones, Paul B. Savage
  • Biofouling-resistant ceragenin-modified materials and structures for water treatment
    Patent number: 8529681
    Abstract: This invention relates to methods for chemically grafting and attaching ceragenin molecules to polymer substrates; methods for synthesizing ceragenin-containing copolymers; methods for making ceragenin-modified water treatment membranes and spacers; and methods of treating contaminated water using ceragenin-modified treatment membranes and spacers. Ceragenins are synthetically produced antimicrobial peptide mimics that display broad-spectrum bactericidal activity. Alkene-functionalized ceragenins (e.g., acrylamide-functionalized ceragenins) can be attached to polyamide reverse osmosis membranes using amine-linking, amide-linking, UV-grafting, or silane-coating methods. In addition, silane-functionalized ceragenins can be directly attached to polymer surfaces that have free hydroxyls.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: September 10, 2013
    Assignee: Sandia Corporation
    Inventors: Michael Hibbs, Susan J. Altman, Howland D. T. Jones, Paul B. Savage
  • Airfoil-shaped micro-mixers for reducing fouling on membrane surfaces
    Patent number: 8292492
    Abstract: An array of airfoil-shaped micro-mixers that enhances fluid mixing within permeable membrane channels, such as used in reverse-osmosis filtration units, while minimizing additional pressure drop. The enhanced mixing reduces fouling of the membrane surfaces. The airfoil-shaped micro-mixer can also be coated with or comprised of biofouling-resistant (biocidal/germicidal) ingredients.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: October 23, 2012
    Assignee: Sandia Corporation
    Inventors: Clifford K. Ho, Susan J. Altman, Paul G. Clem, Michael Hibbs, Adam W. Cook
  • Airfoil-Shaped Micro-Mixers for Reducing Fouling on Membrane Surfaces
    Publication number: 20100118642
    Abstract: An array of airfoil-shaped micro-mixers that enhances fluid mixing within permeable membrane channels, such as used in reverse-osmosis filtration units, while minimizing additional pressure drop. The enhanced mixing reduces fouling of the membrane surfaces. The airfoil-shaped micro-mixer can also be coated with or comprised of biofouling-resistant (biocidal/germicidal) ingredients.
    Type: Application
    Filed: November 11, 2008
    Publication date: May 13, 2010
    Inventors: Clifford K. Ho, Susan J. Altman, Paul G. Clem, Michael Hibbs, Adam W. Cook