Patents by Inventor Frank A. Modine

Frank A. Modine 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).

  • Patent number: 5956147
    Abstract: A two-modulator generalized ellipsometer (2-MGE) comprising two polarizer-photoelastic modulator (PEM) pairs, an optical light source, an optical detection system, and associated data processing and control electronics, where the PEMs are free-running. The input light passes through the first polarizer-PEM pair, reflects off the sample surface or passes through the sample, passes through the second PEM-polarizer pair, and is detected. Each PEM is free running and operates at a different resonant frequency, e.g., 50 and 60 kHz. The resulting time-dependent waveform of the light intensity is a complicated function of time, and depends upon the exact operating frequency and phase of each PEM, the sample, and the azimuthal angles of the polarizer-PEM pairs, but can be resolved into a dc component and eight periodic components.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: September 21, 1999
    Assignee: Lockheed Martin Energy Research Corporation
    Inventors: Gerald E. Jellison, Jr., Frank A. Modine
  • Patent number: 5854586
    Abstract: A varistor includes a Bi-free, essentially homogeneous sintered body of a ceramic composition including, expressed as nominal weight %, 0.2-4.0% oxide of at least one rare earth element, 0.5-4.0% Co.sub.3 O.sub.4, 0.05-0.4% K.sub.2 O, 0.05-0.2% Cr.sub.2 O.sub.3, 0-0.2% CaO, 0.00005-0.01% Al.sub.2 O.sub.3, 0-2% MnO, 0-0.05% MgO, 0-0.5% TiO.sub.3, 0-0.2% SnO.sub.2, 0-0.02% B.sub.2 O.sub.3, balance ZnO.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: December 29, 1998
    Assignee: Lockheed Martin Energy Research Corporation
    Inventors: April D. McMillan, Frank A. Modine, Robert J. Lauf, Mohammad A. Alim, Gerald D. Mahan, Miroslaw Bartkowiak