Patents by Inventor Mark D. Loewen

Mark D. Loewen 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: 12090237
    Abstract: A metal ionic antimicrobial surface configured for external use on a surface location in an indoor environment. A surface structure includes a pair of opposed major surfaces, one surface forming an exposed layer having a pattern of conductive strips and corresponding insulative spacings with a power pod structure secured to the surface structure. The power pod structure houses a battery and a power control circuit electrically connected to the conductive strips. In embodiments, the battery has an amp-hour capacity of 150-1500 mAh, an average width of each conductive strip of copper and silver metallic ions and each insulative spacing is between 0.1 to 0.5 millimeters, and the power control circuit includes a voltage booster circuit that maintains a constant low voltage of 2.5V-4.5V.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: September 17, 2024
    Inventors: Christopher M. Wharton, Zackary G. Lowe, Charles G. Rudolf, Thomas A. Fuller, David K. Tabbutt, Mark D. Loewen, Seth R. Zimmerman
  • Publication number: 20220143233
    Abstract: A metal ionic antimicrobial surface configured for external use on a surface location in an indoor environment. A surface structure includes a pair of opposed major surfaces, one surface forming an exposed layer having a pattern of conductive strips and corresponding insulative spacings with a power pod structure secured to the surface structure. The power pod structure houses a battery and a power control circuit electrically connected to the conductive strips. In embodiments, the battery has an amp-hour capacity of 150-1500 mAh, an average width of each conductive strip of copper and silver metallic ions and each insulative spacing is between 0.1 to 0.5 millimeters, and the power control circuit includes a voltage booster circuit that maintains a constant low voltage of 2.5V-4.5V.
    Type: Application
    Filed: April 23, 2020
    Publication date: May 12, 2022
    Applicant: Aionx Antimicrobial Technologies, Inc.
    Inventors: Christopher M. Wharton, Zackary G. Lowe, Charles G. Rudolf, Thomas A. Fuller, David K. Tabbutt, Mark D. Loewen, Seth R. Zimmerman
  • Patent number: 5186843
    Abstract: A single-layer blood separation medium for separating erythrocytes from whole blood and made of a composite including glass microfibers, cellulose fibers, and synthetic textile fibers, having enhanced tensile strength and lower absorptive capacity compared to binderless glass microfiber sheet. The mean bulk density of the glass microfiber component is less than 0.1 g/cm.sup.3, and is typicaly about 0.05 g/cm.sup.3.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: February 16, 1993
    Assignee: Ahlstrom Filtration, Inc.
    Inventors: John S. Baumgardner, Mark D. Loewen