Patents by Inventor Hansjorg Frei

Hansjorg Frei 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).

  • Diaphragm assembly for blood pressure measuring apparatus
    Publication number: 20080194976
    Abstract: A blood pressure measuring apparatus includes a gage and sleeve attached to the gage that includes an interior pressure chamber. A diaphragm is disposed within the gage, the diaphragm being responsive to pressure changes in said sleeve, wherein the diaphragm is fabricated from a nickel-beryllium alloy.
    Type: Application
    Filed: February 12, 2007
    Publication date: August 14, 2008
    Applicant: WELCH ALLYN, INC.
    Inventors: Raymond A. Lia, John W. Sims, Uwe Valentin, Hansjorg Frei