Patents by Inventor Jennifer P. Nguyen

Jennifer P. Nguyen 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).

  • Friction stirred introduction of particles into a metallic substrate for surface durability treatment
    Patent number: 7163138
    Abstract: An axially elongated cylindrical tool has a protrusion at a lower end thereof which is inserted into a metallic work piece substrate under pressure during rotation of the tool and displacement thereof in one direction. Mixing of a matrix of metal and particles by the protrusion occurs within a stir zone underlying the substrate surface which is thereby treated by dispersion of the particles therein in response to rotation of the tool. Influx of the hard particles into the work piece substrate is effected during said mixing by the rotating tool.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: January 16, 2007
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Philip John Dudt, David R. Forrest, Jennifer P. Nguyen