Patents by Inventor Kook D. Pae

Kook D. Pae 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).

  • Piezoelectric transducer using electrically poled .gamma.-phase nylon 11
    Patent number: 4486683
    Abstract: Nylon 11 (.gamma.-phase) is electrically poled after it is crystallized f commercially available nylon 11 by rapidly crystallizing it from the molten state. The .gamma.-phase nylon 11 so obtained exhibits high piezoelectric properties when poled under different poling conditions at different temperatures. The electrically poled .gamma.-phase nylon 11 is used in a transducer.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: December 4, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Brian A. Newman, Kook D. Pae, Jerry I. Scheinbeim
  • Fabrication method for unoriented phase-I PVF.sub.2
    Patent number: 4349502
    Abstract: Fabrication of unoriented phase I crystalline PVF.sub.2 is described wherein commercially available PVF.sub.2 phase II (crystalline form) is placed in a high pressure cell and its temperature is raised slightly over its melting point. The sample is then subjected to abrupt changes in high pressure and the temperature is dropped thereafter. The pressure is then reduced resulting in a product which contains both phase I and phase II forms of PVF.sub.2. The phase I content of the product varies from a few percent and up depending upon the pressure applied during the quenching step.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: September 14, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kook D. Pae, Brian A. Newman, Jerry I. Scheinbeim