Patents by Inventor Eileen A. Kiefer

Eileen A. Kiefer 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).

  • Respirator facepieces
    Patent number: 7261104
    Abstract: The present invention provides an air-purifying respirator facepiece with a removable, one-piece filter element connector. It also has a removable component housing in the lens as well as a nosecup without inhalation valves that prevents fogging of the portion of the lens used for viewing.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: August 28, 2007
    Assignee: Mine Safety Appliances Company
    Inventors: Eileen A. Kiefer, Mark Cavaliere, Roger P. Wolf, Paul A. Zeller, Klaus Schmidke
  • Respirator facepieces
    Publication number: 20030047183
    Abstract: The present invention provides an air-purifying respirator facepiece with a removable, one-piece filter element connector. It also has a removable component housing in the lens as well as a nosecup without inhalation valves that prevents fogging of the portion of the lens used for viewing.
    Type: Application
    Filed: May 10, 2002
    Publication date: March 13, 2003
    Inventors: Eileen A. Kiefer, Mark Cavaliere, Roger P. Wolf, Paul A. Zeller, Klaus Schmidke