Patents by Inventor Andrew S. Heller

Andrew S. Heller 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).

  • PERSONAL PROTECTIVE ANTI-VIRAL FACE MASK
    Publication number: 20230372747
    Abstract: An entrainment-based filtering system for use in connection with a facemask or respirator that includes: a filter housing defining an interior volume comprising at least one airflow pathway having an airflow pathway length that is longer than the length of the interior volume and spaced within the interior volume; and a plurality of entrainment substrates. The plurality of entrainment substrates is positioned within the at least one airflow pathway and the plurality of substrates and the dimensions of the at least one airflow pathway together function to entrain particles on the surface of the chemically coated entrainment substrates and prevent at least 95% of particles traveling through the at least one airflow pathway from exiting the entrainment-based filter.
    Type: Application
    Filed: September 20, 2021
    Publication date: November 23, 2023
    Inventors: James E. Fay, III, Richard Dennis Vigil, John A. Soderquist, Andrew S. Heller, Trung Lo Deo, Cameron Lynch, Danilo R. Manfre, Beate Schmittmann
  • Personal protective anti-viral face mask
    Patent number: 11123584
    Abstract: An entrainment-based filtering system for use in connection with a facemask or respirator that includes: a filter housing defining an interior volume comprising at least one airflow pathway having an airflow pathway length that is longer than the length of the interior volume and spaced within the interior volume; and a plurality of entrainment substrates. The plurality of entrainment substrates is positioned within the at least one airflow pathway and the plurality of substrates and the dimensions of the at least one airflow pathway together function to entrain particles on the surface of the chemically coated entrainment substrates and prevent at least 95% of particles traveling through the at least one airflow pathway from exiting the entrainment-based filter.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: September 21, 2021
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: James E. Fay, III, Richard Dennis Vigil, John A. Soderquist, Andrew S. Heller, Trung Lo Deo, Cameron Lynch, Danilo R. Manfre, Beate Schmittmann
  • Method and apparatus for dilating an orifice in biological tissue
    Publication number: 20020133128
    Abstract: A dilation kit for dilating an orifice in living tissue. The kit includes at least a guidewire, a first dilator defining an internal throughbore for receiving the guidewire, and a second dilator defining an internal throughbore for receiving the guidewire. The second dilator defines an outer surface having a periphery greater than the periphery of the first dilator. In one embodiment, the straightening element is part of a guidewire advancement device. The kit may also include a hemostat and/or a PEG tube. A method for using the dilation kit to dilate an orifice in living tissue is also provided.
    Type: Application
    Filed: March 16, 2001
    Publication date: September 19, 2002
    Inventor: Andrew S. Heller