Patents by Inventor Matthew Owen Stefanick

Matthew Owen Stefanick 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).

  • Power system
    Patent number: 9194272
    Abstract: The present disclose is directed to a power system. The power system may include a power source that creates a flow of exhaust. The power system may further include a particulate collection device that receives the flow of exhaust. The power system may also include an additive injector located downstream of the power source, the additive injector may be configured to provide a controlled supply of additive to the flow of exhaust.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: November 24, 2015
    Assignee: Caterpillar Inc.
    Inventors: Matthew Owen Stefanick, Brett Bailey, Christopher Joseph Rynders, Jr., Clifford Eugene Cotton, III
  • Power system
    Publication number: 20100132341
    Abstract: The present disclose is directed to a power system. The power system may include a power source that creates a flow of exhaust. The power system may further include a particulate collection device that receives the flow of exhaust. The power system may also include an additive injector located downstream of the power source, the additive injector may be configured to provide a controlled supply of additive to the flow of exhaust.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 3, 2010
    Inventors: Matthew Owen Stefanick, Brett Bailey, Christopher Joseph Rynders, JR., Clifford Eugene Cotton, III
  • Dual path exhaust emission control system
    Patent number: 7673446
    Abstract: An exhaust emission control system for an internal combustion engine is disclosed. The exhaust emission control system has a first passageway and a second passageway disposed to receive exhaust in parallel. The exhaust emission control system also has a valve arrangement configured to regulate the flow of exhaust to the first and second passageways, and at least one sensor configured to sense a parameter indicative of a constituent of the exhaust. The at least one sensor generates a signal corresponding to the sensed parameter. The exhaust emission control system also has a controller in communication with the valve and the at least one sensor. The controller is configured to affect operation of the valve in response to the signal.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: March 9, 2010
    Assignee: Caterpillar Inc.
    Inventors: Svetlana Mikhailovna Zemskova, Julie Marie Faas, Christie Susan Ragle, Matthew Owen Stefanick, Ronald Graham Silver
  • Dual path exhaust emission control system
    Publication number: 20080178579
    Abstract: An exhaust emission control system for an internal combustion engine is disclosed. The exhaust emission control system has a first passageway and a second passageway disposed to receive exhaust in parallel. The exhaust emission control system also has a valve arrangement configured to regulate the flow of exhaust to the first and second passageways, and at least one sensor configured to sense a parameter indicative of a constituent of the exhaust. The at least one sensor generates a signal corresponding to the sensed parameter. The exhaust emission control system also has a controller in communication with the valve and the at least one sensor. The controller is configured to affect operation of the valve in response to the signal.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Inventors: Svetlana Mikhailovna Zemskova, Julie Marie Faas, Christie Susan Ragle, Matthew Owen Stefanick, Ronald Graham Silver