Patents by Inventor Paul S. Dunn

Paul S. Dunn 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).

  • Titanium-tantalum alloys
    Patent number: 6027585
    Abstract: A process of preparing a titanium-tantalum alloy including forming a suite mixture of essentially pure titanium powder and essentially pure tantalum powder, melting the mixture of titanium powder and tantalum powder by plasma torch melting under a pressure greater than atmospheric pressure to form a titanium-tantalum solution, and casting the molten solution of titanium-tantalum to form a solid homogeneous titanium-tantalum product is disclosed.The process can further include hot-rolling the cast solid homogeneous titanium-tantalum product to form a sheet of the titanium-tantalum product.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: February 22, 2000
    Assignee: The Regents of the University of California office of Technology Transfer
    Inventors: R. Alan Patterson, Paul S. Dunn, John F. Bingert, James D. Cotton
  • Purification of tantalum by plasma arc melting
    Patent number: 5972065
    Abstract: Purification of tantalum by plasma arc melting. The level of oxygen and carbon impurities in tantalum was reduced by plasma arc melting the tantalum using a flowing plasma gas generated from a gas mixture of helium and hydrogen. The flowing plasma gases of the present invention were found to be superior to other known flowing plasma gases used for this purpose.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 26, 1999
    Assignee: The Regents of the University of California
    Inventors: Paul S. Dunn, Deniece R. Korzekwa
  • High strength uranium-tungsten alloys
    Patent number: 5035854
    Abstract: Alloys of uranium and tungsten and a method for making the alloys. The amount of tungsten present in the alloys is from about 4 wt % to about 35 wt %. Tungsten particles are dispersed throughout the uranium and a small amount of tungsten is dissolved in the uranium.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: July 30, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul S. Dunn, Haskell Sheinberg, Billy M. Hogan, Homer D. Lewis, James M. Dickinson
  • High strength uranium-tungsten alloy process
    Patent number: 4959194
    Abstract: Alloys of uranium and tungsten and a method for making the alloys. The amount of tungsten present in the alloys is from about 4 wt % to about 35 wt %. Tungsten particles are dispersed throughout the uranium and a small amount of tungsten is dissolved in the uranium.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: September 25, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul S. Dunn, Haskell Sheinberg, Billy M. Hogan, Homer D. Lewis, James M. Dickinson