Patents by Inventor Andreas During

Andreas During 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 gas post treatment system
    Patent number: 7856809
    Abstract: An exhaust gas post treatment system for nitrogen oxide and particle reduction of internal combustion engines operated with excess air, comprising a particle filter disposed in the exhaust gas stream of the internal combustion engine. The particle filter is a surface-type particle filter or a deep bed filter, and is charged on an outlet side with an SCR-active catalyst material for reducing nitrogen oxides. Ammonia or an ammonia-releasing reduction agent is supplied to the exhaust gas stream upstream of the particle filter.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: December 28, 2010
    Assignee: MAN Nutzfahrzeuge AG
    Inventor: Andreas Düring
  • EXHAUST GAS POST TREATMENT SYSTEM
    Publication number: 20080041040
    Abstract: An exhaust gas post treatment system for nitrogen oxide and particle reduction of internal combustion engines operated with excess air, comprising a particle filter disposed in the exhaust gas stream of the internal combustion engine. The particle filter is a surface-type particle filter or a deep bed filter, and is charged on an outlet side with an SCR-active catalyst material for reducing nitrogen oxides. Ammonia or an ammonia-releasing reduction agent is supplied to the exhaust gas stream upstream of the particle filter.
    Type: Application
    Filed: August 16, 2007
    Publication date: February 21, 2008
    Inventor: Andreas During