Patents by Inventor Colleen J. Eckstein

Colleen J. Eckstein 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).

  • Exhaust system having a gold-platinum group metal catalyst
    Patent number: 8236261
    Abstract: A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: August 7, 2012
    Assignee: Caterpillar Inc.
    Inventors: Christie Susan Ragle, Ronald G. Silver, Svetlana Mikhailovna Zemskova, Colleen J. Eckstein
  • EXHAUST SYSTEM HAVING A GOLD-PLATINUM GROUP METAL CATALYST
    Publication number: 20120051992
    Abstract: A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.
    Type: Application
    Filed: October 6, 2011
    Publication date: March 1, 2012
    Applicant: Caterpillar Inc.
    Inventors: Christie Susan Ragle, Ronald G. Silver, Svetlana Mikhailovna Zemskova, Colleen J. Eckstein
  • Exhaust system having a gold-platinum group metal catalyst
    Patent number: 8071504
    Abstract: A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: December 6, 2011
    Assignee: Caterpillar Inc.
    Inventors: Christie Susan Ragle, Ronald G. Silver, Svetlana Mikhailovna Zemskova, Colleen J. Eckstein
  • Exhaust system having a gold-platinum group metal catalyst
    Publication number: 20100158779
    Abstract: A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventors: Christie Susan Ragle, Ronald G. Silver, Svetlana Mikhailovna Zemskova, Colleen J. Eckstein