Patents by Inventor Edgar Samuelsen

Edgar Samuelsen 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).

  • Rotary filtration device with hyperphilic membrane
    Patent number: 5000848
    Abstract: A rotary filtration device having at least two members, one at least partially within the other to define a fluid gap therebetween, is disclosed. One or more filters are located on one or more of the members facing the fluid gap. Sufficient uncharged hydrophilic polar groups, preferably uncharged substituted amide groups, are located on the surface of the filter to render the surface hydrophilic.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: March 19, 1991
    Assignee: Membrex, Inc.
    Inventors: Leonard T. Hodgins, Edgar Samuelsen
  • Solid state cross-linked polymer
    Patent number: 4596858
    Abstract: Cross-linked polymeric gels or films are prepared by dissolving in a suitable solvent a linear polymer or polymers containing pendant amidocarbonyl or oxycarbonyl groups, hydroxyl groups present as either pendant groups from the polymer or as a low molecular weight polyol, and a strongly acidic catalyst (which may also be a pendant group on a polymer). The solvent is removed by coagulation and/or drying and the dry material is heat-cured, thus cross-linking and insolubilizing the polymer or polymers.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: June 24, 1986
    Inventors: Harry P. Gregor, Edgar Samuelsen, Paul I. Dalven, Charles D. Gregor