Patents by Inventor James D. Pham

James D. Pham 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).

  • OPTICAL CONSTRUCTION
    Publication number: 20240168204
    Abstract: An optical construction includes a lens film having a plurality of optically transparent first beads at least partially embedded in a first layer. A light blocking second layer is disposed on the lens film and defines a plurality of through openings therein extending at least partially between opposite major top and bottom surfaces of the second layer. The through openings are aligned to the first beads in a one-to-one correspondence.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 23, 2024
    Inventors: Bert T. Chien, William B. Kolb, Tri D. Pham, Daoyun Song, Daniel K. Bruesewitz, Stephen P. Maki, James A. Phipps, Jonah Shaver, Zhaohui Yang
  • Low reaction rate, high blast shaped charge waveshaper
    Patent number: 7752972
    Abstract: A shaped charge warhead having a longitudinal axis includes a casing; a liner disposed in the casing; an explosive disposed behind the liner; a wave shaper disposed in the explosive, the wave shaper comprising a low reaction rate high blast reactive material; and a detonator disposed adjacent the explosive. Preferably, the wave shaper is symmetrical about the longitudinal axis. The low reaction rate, high-blast material may be, for example, one of powdered silicon or boron and powdered silicon or boron in a plastic matrix.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: July 13, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Ernest L. Baker, James D. Pham, Arthur S. Daniels