Patents by Inventor Todd Leonhardt

Todd Leonhardt 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).

  • Publication number: 20230357892
    Abstract: A method for forming tungsten-refractory metal alloy powders, and tungsten-refractory metal alloy powders formed by the method. The method includes mixing a majority portion by weight of a base tungsten powder with a minority portion by weight of a base refractory metal powder to form a mixture, which is then milled for a period of time sufficient to at least partially mechanically alloy the base tungsten powder and base refractory metal powder together to form at-least-partially-mechanically-alloyed particles, which are then heat treated to a temperature sufficient to promote diffusion between tungsten and the refractory metal and obtain agglomerations of particles having only a tungsten phase, which are then milled to break up the agglomerations of particles and obtain the tungsten-refractory metal alloy powder.
    Type: Application
    Filed: December 4, 2020
    Publication date: November 9, 2023
    Inventor: Todd LEONHARDT
  • Publication number: 20050238522
    Abstract: Rhenium-tungsten alloys including rhenium and from about 0.025% to less than about 10% by weight tungsten. The rhenium-tungsten alloys are formed by a process that includes coating rhenium metal powders with a liquid including a tungsten compound, drying the coated rhenium powder, compressing the dried coated powder to form a compact, and then sintering the compact to form the rhenium-tungsten alloy. The rhenium-tungsten alloys according to the invention exhibit mechanical properties that are superior to high-purity rhenium metal without a loss in ductility.
    Type: Application
    Filed: April 22, 2004
    Publication date: October 27, 2005
    Applicant: Rhenium Alloys, Inc.
    Inventors: Todd Leonhardt, Clifford Guthman