Patents by Inventor Spencer Lee

Spencer Lee 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).

  • Variable pulse width circuit
    Patent number: 4099072
    Abstract: A variable pulse width circuit comprising a semiconductor switch and a circuit of a pair of capacitors in series with the switch. The capacitors have a rectifier joining one side of said capacitors. The capacitors are in series with the load and are connected to a charging circuit. Two current paths are provided to enable charge of such capacitors under conditions where wide and narrow pulse widths of load current are obtained. Also obtained are higher and lower amplitudes of voltage pulses from the charging circuit.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: July 4, 1978
    Assignee: Hughes Aircraft Company
    Inventors: J. Spencer Lee, Leon E. Stoddard
  • Feedback capacitor divider
    Patent number: 4069459
    Abstract: An amplifier circuit, comprising a capacitive-resistive network electrically connected between the input and output of the amplifier wherein the network provides equivalent capacitance between the input and output thereby providing frequency response compensation.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: January 17, 1978
    Assignee: Santa Barbara Research Center
    Inventor: J. Spencer Lee