Patents by Inventor Helmut Herwig

Helmut Herwig 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 system of an internal combustion engine, and method for preparing a reducing agent which is introduced into the internal combustion engine exhaust gas
    Patent number: 9157358
    Abstract: An exhaust gas system includes a reducing agent preparation section having a first cylindrical exhaust gas line pipe section opening approximately perpendicularly into a second exhaust gas line pipe section via an opening in a cylinder lateral surface of the second exhaust gas line pipe section. An injector unit for introducing the reducing agent into the exhaust gas is situated at the first exhaust gas line pipe section, upstream from the opening. The opening in the cylinder lateral surface of the second exhaust gas line pipe section has a larger extension in the direction of the longitudinal extent of the second exhaust gas line pipe section than transversely thereto. In a method using the reducing agent preparation section a rotating exhaust gas flow is formed within the second exhaust gas line pipe section.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: October 13, 2015
    Assignee: Daimler AG
    Inventors: Thomas Beckmann, Tillmann Braun, Frank Duvinage, Helmut Herwig, Bernhard Kobiela, Peter Lueckert, Antonio Pepe, Peter Raitschev, Joachim Schommers
  • Exhaust Gas System of an Internal Combustion Engine, and Method for Preparing a Reducing Agent Which is Introduced into the Internal Combustion Engine Exhaust Gas
    Publication number: 20150047324
    Abstract: An exhaust gas system includes a reducing agent preparation section having a first cylindrical exhaust gas line pipe section opening approximately perpendicularly into a second exhaust gas line pipe section via an opening in a cylinder lateral surface of the second exhaust gas line pipe section. An injector unit for introducing the reducing agent into the exhaust gas is situated at the first exhaust gas line pipe section, upstream from the opening. The opening in the cylinder lateral surface of the second exhaust gas line pipe section has a larger extension in the direction of the longitudinal extent of the second exhaust gas line pipe section than transversely thereto. In a method using the reducing agent preparation section a rotating exhaust gas flow is formed within the second exhaust gas line pipe section.
    Type: Application
    Filed: January 11, 2013
    Publication date: February 19, 2015
    Inventors: Thomas Beckmann, Tillmann Braun, Frank Duvinage, Helmut Herwig, Bernhard Kobiela, Peter Lueckert, Antonio Pepe, Peter Raitschev, Joachim Schommers
  • Deferrizing flux salt composition for flux baths
    Patent number: 6802912
    Abstract: The invention relates to a flux salt composition for flux baths which is available for particularly simple regeneration and deferrizing. The deferrizing flux salt composition for flux baths, containing zinc chloride and alkali metal chloride, contains at least one or more alkalizing constituents and one or more constituents which, in aqueous solution, oxidize iron(II) to form iron(III).
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: October 12, 2004
    Assignee: Goldschmidt AG
    Inventors: Georg Bogar, Helmut Herwig, Harald Ernst
  • Deferrizing flux salt composition for flux baths
    Publication number: 20030084755
    Abstract: The invention relates to a flux salt composition for flux baths which is available for particularly simple regeneration and deferrizing.
    Type: Application
    Filed: July 15, 2002
    Publication date: May 8, 2003
    Inventors: Georg Bogar, Helmut Herwig, Harald Ernst