Patents by Inventor Charles P. Ashdown

Charles P. Ashdown 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).

  • Fine hollow particles of metals and metal alloys and their production
    Patent number: 5024695
    Abstract: Soluble gas is introduced in a melt material which is then atomized and rapidly cooled. The cooling drives the gas from solution, further disintegrating the atomized material to an ultra-fine powder. In one embodiment the atomization and rapid cooling are effected using a gas atomization die. Introduction of the soluble gas may be effected by addition of reactive constituents to the melt, for reactively forming such gas. Finer powders with desirable metallurgical properties are formed using a metallic melt.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: June 18, 1991
    Assignee: UltraFine Powder Technology, Inc.
    Inventors: Charles P. Ashdown, James G. Bewley, George B. Kenney
  • Tandem atomization method for ultra-fine metal powder
    Patent number: 4626278
    Abstract: Soluble gas is introduced in a melt material which is then atomized and rapidly cooled. The cooling drives the gas from solution, further disintegrating the atomized material to an ultra-fine powder. In one embodiment the atomization and rapid cooling are effected using a gas atomization die. Introduction of the soluble gas may be effected by addition of reactive constituents to the melt, for reactively forming such gas. Finer powders with desirable metallurgical properties are formed using a metallic melt.
    Type: Grant
    Filed: July 26, 1984
    Date of Patent: December 2, 1986
    Inventors: George B. Kenney, Charles P. Ashdown