Patents by Inventor Mark M. Morris

Mark M. Morris 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).

  • Protective facial mask
    Patent number: 4827923
    Abstract: A protective facial mask covering the oral and nasal cavities. It slips over the user's head and comprises a single generally cylindrical, generally tubular, piece of an expandable impervious material open at each end. Two diametrically opposed ear slots and an opening below and extending between the ear slots hold the mask in place and provide for better conformity to the user's head. A filtered breathing cannula on the interior of the mask allows air to enter the nasal cavity only.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: May 9, 1989
    Inventors: Dolores Bishop, Mark M. Morris
  • Protective facial mask
    Patent number: 4671271
    Abstract: A protective facial mask covering the oral and nasal cavities. It slips over the user's head and comprises a single generally cylindrical, generally tubular, piece of an expandable impervious material open at each end. Two diametrically opposed ear slots and an opening below and extending between the ear slots hold the mask in place and provide for better conformity to the user's head. A filtered breathing cannula on the interior of the mask allows air to enter the nasal cavity only.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: June 9, 1987
    Inventors: Dolores Bishop, Mark M. Morris