Patents by Inventor Stephen Mullen

Stephen Mullen 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).

  • Controller for modifying the voltage signal of an exhaust gas oxygen sensor
    Patent number: 9506415
    Abstract: A control device is interposable between an oxygen sensor and an electric control unit of a motor vehicle to receive a voltage signal of the oxygen sensor, alter the voltage signal, and output an altered voltage signal. The altered voltage signal is received by the electronic control unit and causes the electronic control unit to produce fuel injector control signals that provide a richer fuel mixture to the internal combustion engine than what would be provided in the absence of said controller.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: November 29, 2016
    Inventor: Stephen Mullen
  • Controller for Modifying the Voltage Signal of an Exhaust Gas Oxygen Sensor
    Publication number: 20150198108
    Abstract: A control device is interposable between an oxygen sensor and an electric control unit of a motor vehicle to receive a voltage signal of the oxygen sensor, alter the voltage signal, and output an altered voltage signal. The altered voltage signal is received by the electronic control unit and causes the electronic control unit to produce fuel injector control signals that provide a richer fuel mixture to the internal combustion engine than what would be provided in the absence of said controller.
    Type: Application
    Filed: December 30, 2014
    Publication date: July 16, 2015
    Inventor: Stephen Mullen
  • Apparatus and method for adjusting the performance of an internal combustion engine
    Patent number: 7805236
    Abstract: A passive control device is interposable between an oxygen sensor and an electric control unit of a motor vehicle to modify a reference voltage used by the electric control unit so that a richer fuel mixture is provided to an internal combustion engine of the motor vehicle than would otherwise be provided in absence of the passive control device. The passive control device directly passes the voltage signal from the oxygen sensor to the electronic control unit without modification. The passive control device works with the electronic control unit to provide a richer fuel mixture without reprogramming the electronic control unit.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: September 28, 2010
    Inventor: Stephen Mullen
  • APPARATUS AND METHOD FOR ADJUSTING THE PERFORMANCE OF AN INTERNAL COMBUSTION ENGINE
    Publication number: 20090192694
    Abstract: A passive control device is interposable between an oxygen sensor and an electric control unit of a motor vehicle to modify a reference voltage used by the electric control unit so that a richer fuel mixture is provided to an internal combustion engine of the motor vehicle than would otherwise be provided in absence of the passive control device. The passive control device directly passes the voltage signal from the oxygen sensor to the electronic control unit without modification. The passive control device works with the electronic control unit to provide a richer fuel mixture without reprogramming the electronic control unit.
    Type: Application
    Filed: August 28, 2008
    Publication date: July 30, 2009
    Inventor: Stephen Mullen