Patents by Inventor Walter Schaedler

Walter Schaedler 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).

  • Gas pressure gauge and pressure measuring method
    Patent number: 4995264
    Abstract: A process for measuring pressure, preferably vacuum is described. The measuring signals from a heat conduction gauge and the measuring signals from a gas friction gauge are processed to a common measuring signal preferably by multiplication. They are linearly superimposed or added. The heat conduction gauge is preferably a Pirani gauge and the gas friction gauge is preferably a tuning fork quartz gauge.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: February 26, 1991
    Assignee: Balzers Aktiengesellschaft
    Inventors: Rudolf Stocker, Walter Schaedler