Patents by Inventor Walter C. Pritchet

Walter C. Pritchet 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).

  • Method for inducing uniaxial magnetic anisotropy in an amorphous ferromagnetic alloy
    Patent number: 4033795
    Abstract: Through the practice of this invention there is achieved control of the vibrational frequency of an electromechanical oscillator. This is achieved by utilizing the change in Young's modulus of elasticity which occurs for certain materials with applied magnetic field, known as the .DELTA.E-effect. By selective annealing in the presence of specially directed magnetic field, the .DELTA.E-effect is selectively altered along specific directions in the vibrational member. Additionally, by control of the .DELTA.E-effect of a sonic delay line, there is achieved control of the delay time for an acoustic pulse propagating therein.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: July 5, 1977
    Assignee: International Business Machines Corporation
    Inventors: Brian S. Berry, Walter C. Pritchet