Patents by Inventor Marvin Martin Allen

Marvin Martin Allen 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).

  • Thermomechanical treatment for nickel base superalloys
    Patent number: 3975219
    Abstract: A thermomechanical treatment for producing useful microstructures in the nickel base superalloys is described. The process is applied to material which has been placed in a condition of super-plasticity, and utilizes isothermal hot deformation under conditions which produce a uniform dislocation density and a resultant propensity for abnormal grain growth. The material is then recrystallized in a thermal gradient to produce a final structure consisting of elongated grains.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: August 17, 1976
    Assignee: United Technologies Corporation
    Inventors: Marvin Martin Allen, John Alois Miller, Bruce Edward Woodings