Patents by Inventor Fred William Erickson

Fred William Erickson 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).

  • Radar based application programmable waveform generator component
    Patent number: 7050000
    Abstract: An exemplary radar system includes a waveform generator that generates a control waveform. An in-phase and quadrature modulator receives the control waveform from the waveform generator and in turn generates a waveform output that is amplified by a power amplifier before being transmitted from an antenna.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: May 23, 2006
    Assignee: Northrop Grumman Corporation
    Inventors: Garth Ernest Weals, Yair Alon, Fred William Erickson
  • Drive circuit with constant current output
    Patent number: 4047049
    Abstract: A constant current drive circuit that can be driven directly from the output of a shift register which can find use, for example, as a constant current source for a light emitting diode (LED) to ensure uniform birghtness throughout a display surface that includes a plurality of LEDs.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: September 6, 1977
    Assignee: Litton Systems, Inc.
    Inventors: Fred William Erickson, Roy Hiroshi Nakahara
  • Drive circuit with constant current
    Patent number: 4045683
    Abstract: A constant current drive circuit that can be driven directly from the output of a shift register which can find use, for example, in maintaining a constant current through a controlled device such as one or more light emitting diodes (LEDs) to ensure uniform brightness throughout a display surface that includes a plurality of LEDs.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: August 30, 1977
    Assignee: Litton Systems, Inc.
    Inventor: Fred William Erickson