Patents by Inventor William Leeper

William Leeper 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).

  • Voltage variable capacitor
    Publication number: 20070242410
    Abstract: A charge storage device having a capacitance that is variable by alteration of the relative permittivity of the dielectric positioned between conductive electrodes within the device. The device consists of two conductive plates sandwiching a conductive grid, typically embedded within a dielectric material. Charging the grid with a negative or positive potential changes the value of the dielectric constant (the relative permittivity) and thereby changes the capacitance of the device.
    Type: Application
    Filed: June 1, 2004
    Publication date: October 18, 2007
    Inventor: William Leeper
  • Collinearly polarized nested cup dipole feed
    Patent number: 5548299
    Abstract: A nested cup dipole feed capable of collinear polarization for all bands, and frequency staggering of one linear polarization with respect to the orthogonal linear polarization. The dipole elements for all bands are collinearly placed, making one linearly polarized set to be orthogonal to the other collinear sets. One collinearly placed dipole can be tuned differently from the orthogonal ones to permit frequency staggering at the crossover frequencies, thus permitting at least high gain for one polarization.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: August 20, 1996
    Assignee: Hughes Aircraft Company
    Inventors: George I. Tsuda, Thomas A. Haeger, William A. Leeper