Patents by Inventor Alexander C. Ehrlich

Alexander C. Ehrlich 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).

  • Vibrating-reed susceptometer for measuring anisotropic aspects of susceptibility
    Patent number: 5600241
    Abstract: A method for determining the anisotropy of the magnetic susceptibility of a sample includes determining the resonant frequency of the sample in substantially zero magnetic field, the resonant frequency being for flexure vibration in a selected plane of vibration. A second step is applying a uniform dc magnetic field to the sample, the magnetic field having a component in the selected plane of vibration. A third step is determining the resonant frequency of the sample in the presence of the applied magnetic field, the resonant frequency being for flexure vibration in the selected plane. The fourth step is determining the anisotropy of the magnetic susceptibility of the sample, based on the amplitude of the magnetic field component and on the above-determined resonant frequencies.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: February 4, 1997
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Ronald L. Jacobsen, Jr., Alexander C. Ehrlich