Patents by Inventor Abbas T. Sabbah

Abbas T. Sabbah 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).

  • Vehicle instrument panel lamps, pulse width dimmer system therefor
    Patent number: 5334914
    Abstract: A pulse width dimming system responsive to low frequency pulse width modulated signals of various duty cycles employs a single charging capacitor in a charge pump circuit to develop voltage signals for controlling current through a field effect transistor used to control dimming of the intensity of lamps in a vehicle instrument panel.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: August 2, 1994
    Assignee: Chrysler Corporation
    Inventors: Patrick D. Dean, Abbas T. Sabbah
  • Vehicle instrument panel lamps, improved pulse width dimmer system therefor
    Patent number: 5268616
    Abstract: A pulse width dimming system responsive to low frequency pulse width modulated signals of various duty cycles employs a single charging capacitor in a charge pump circuit connected between a voltage source and the output of an FET for developing voltage pulse signals for controlling current through a field effect transistor used to control the intensity of lamps in a vehicle instrument panel.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: December 7, 1993
    Assignee: Chrysler Corporation
    Inventors: Patrick D. Dean, Abbas T. Sabbah