Patents by Inventor Willian Ehni

Willian Ehni 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).

  • Analysis of porous material using laboratory calibrated test apparatus and sample data
    Patent number: 11041796
    Abstract: Test apparatus for testing porous material such as used in roadway base or building foundations may be deployed in the field at various test sites. The test apparatus includes electrodes that contact the porous material under test and a sensor unit that supplies electromagnetic signals to the porous material. Response signals reveal electrical parameters such as complex impedance which can be equated to material properties such as density and moisture content. Reference may be made to empirical correlations made in laboratory tests using the same test apparatus to enable the effects of the test apparatus on the measurement to be accounted for. The electrodes may include flexible coplanar electrodes that reduce air gaps when in contact with the porous material.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: June 22, 2021
    Assignee: ELECTRICAL DENSITY GAUGE, LLC
    Inventors: Dennis M. Anderson, Stephan R-K Fuelling, Dave B Straley, Willian Ehni
  • ANALYSIS OF POROUS MATERIAL USING LABORATORY CALIBRATED TEST APPARATUS AND SAMPLE DATA
    Publication number: 20190226969
    Abstract: Test apparatus for testing porous material such as used in roadway base or building foundations may be deployed in the field at various test sites. The test apparatus includes electrodes that contact the porous material under test and a sensor unit that supplies electromagnetic signals to the porous material. Response signals reveal electrical parameters such as complex impedance which can be equated to material properties such as density and moisture content. Reference may be made to empirical correlations made in laboratory tests using the same test apparatus to enable the effects of the test apparatus on the measurement to be accounted for. The electrodes may include flexible coplanar electrodes that reduce air gaps when in contact with the porous material.
    Type: Application
    Filed: January 23, 2019
    Publication date: July 25, 2019
    Inventors: Dennis M. Anderson, Stephan R-K Fuelling, Dave B. Straley, Willian Ehni