Patents by Inventor Jeffrey E. Hallgren

Jeffrey E. Hallgren 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).

  • Publication number: 20190323405
    Abstract: An exhaust treatment system configured to treat exhaust gas produced by an engine of a vehicle and its method of operation involve providing a gasoline particulate filter (GPF) configured to trap particulate matter (PM) in the exhaust gas and a utilizing a controller configured to determine a modeled PM load level on the GPF and, based on the modeled PM load level of the GPF, control operation of the engine to maintain at least a minimum PM load level on the GPF, wherein the minimum PM load level is greater than zero and corresponds to an optimized efficiency of the GPF.
    Type: Application
    Filed: June 21, 2018
    Publication date: October 24, 2019
    Inventors: Brett Schubring, Brian E. Hallgren, Luis J. Del Rio, Jeffrey P. Wuttke, Jordan E. Easter
  • Patent number: D413590
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: September 7, 1999
    Assignee: Komatsu America International Company
    Inventors: Caryn M. Altmann, Thomas M. Cameron, Eugene J. Golec, Jeffrey E. Hallgren, Hadyn H. Kerner
  • Patent number: D427207
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: June 27, 2000
    Assignee: Komatsu America International Company
    Inventors: Caryn M. Altmann, Thomas M. Cameron, Eugene J. Golec, Jeffrey E. Hallgren, Hadyn H. Kerner
  • Patent number: D427208
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: June 27, 2000
    Assignee: Komatsu America International Company
    Inventors: Caryn M. Altmann, Thomas M. Cameron, Eugene J. Golec, Jeffrey E. Hallgren, Hadyn H. Kerner
  • Patent number: D427613
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: July 4, 2000
    Assignee: Komatsu America International Company
    Inventors: Caryn M. Altmann, Thomas M. Cameron, Eugene J. Golec, Jeffrey E. Hallgren, Hadyn H. Kerner
  • Patent number: D428022
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: July 11, 2000
    Assignee: Komatsu America International Company
    Inventors: Caryn M. Altmann, Thomas M. Cameron, Eugene J. Golec, Jeffrey E. Hallgren, Hadyn H. Kerner