Patents by Inventor David R. Freriks

David R. Freriks 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).

  • Biohazard Mask Filter
    Publication number: 20120291787
    Abstract: An exhalate filter medium for a biohazard mask is made of polytetrafluoroethylene (PTFE) and surrounding layers of a wicking material and an antimicrobial material. The exhalate filter may be contained in a removable and replaceable cartridge snap-fit into the surface of a biohazard mask.
    Type: Application
    Filed: August 7, 2012
    Publication date: November 22, 2012
    Applicant: LINCOLN ADVANCED TECHNOLOGIES, LLC
    Inventor: David R. Freriks
  • Biohazard Mask Filter
    Publication number: 20110132373
    Abstract: An exhalate filter medium for a biohazard mask is made of polytetrafluoroethylene (PTFE) and surrounding layers of a wicking material and an antimicrobial material. The exhalate filter may be contained in a removable and replaceable cartridge snap-fit into the surface of a biohazard mask.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 9, 2011
    Applicant: LINCOLN ADVANCED TECHNOLOGIES, LLC
    Inventor: David R. Freriks