Patents by Inventor Steffen Schnapp

Steffen Schnapp 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 emission control system for the exhaust gas of a diesel engine
    Patent number: 6401455
    Abstract: An injection device for a reducing agent, a mixing device and a catalyst device are provided in an exhaust pipe. The mixing device is disposed upstream of the injection device as seen in the direction of flow of the exhaust gas. An exhaust gas inlet pipe is connected to the exhaust pipe along the main axis of the exhaust pipe. A first level of the catalyst device may advantageously be a hydrolysis-catalyst module, while the other levels may be SCR catalyst modules.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: June 11, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wieland Mathes, Frank Witzel, Steffen Schnapp