Patents by Inventor Stefan Tolle

Stefan Tolle 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).

  • Patent number: 11918670
    Abstract: A composition contains glycolipids and triethyl citrate (TEC). The TEC can assist in stabilizing a foam of a corresponding aqueous composition. A method can be used for preparing a corresponding formulation, preferably a cosmetical or pharmaceutical formulation, by providing the composition and diluting the composition. The pH of the composition may be adjusted during the dilution by adding an organic or inorganic base.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 5, 2024
    Assignees: Evonik Operations GmbH, Evonik Dr. Straelmans GmbH
    Inventors: Kathrin Daniela Brandt, Stefan Julian Liebig, Hans Henning Wenk, Manuela Salmina-Petersen, Christoph Tölle, Alina Muss
  • Patent number: 10669923
    Abstract: A combustion machine comprising an internal combustion engine and a cooling system that has a coolant pump, a main cooler, a heating heat exchanger, a bypass which bypasses the heating heat exchanger, coolant ducts in the internal combustion engine, and a regulating device with an actuator which serves for the regulated distribution of a coolant as a function of at least one local coolant temperature. The invention is characterized in that, when the actuator is actuated in one direction, the regulating device—when it is in a first position, allows coolant flow through the internal combustion engine and the heating heat exchanger, and prevents coolant from flowing through the bypass and the main cooler;—when it is in a second position, additionally allows coolant to flow through the bypass; and—when it is in a third position, additionally allows coolant to flow through the main cooler.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: June 2, 2020
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Manfred Kloft, Stefan Tölle
  • Publication number: 20170298805
    Abstract: A combustion machine comprising an internal combustion engine and a cooling system that has a coolant pump, a main cooler, a heating heat exchanger, a bypass which bypasses the heating heat exchanger, coolant ducts in the internal combustion engine, and a regulating device with an actuator which serves for the regulated distribution of a coolant as a function of at least one local coolant temperature. The invention is characterized in that, when the actuator is actuated in one direction, the regulating device —when it is in a first position, allows coolant flow through the internal combustion engine and the heating heat exchanger, and prevents coolant from flowing through the bypass and the main cooler; —when it is in a second position, additionally allows coolant to flow through the bypass; and —when it is in a third position, additionally allows coolant to flow through the main cooler.
    Type: Application
    Filed: August 26, 2015
    Publication date: October 19, 2017
    Inventors: Manfred KLOFT, Stefan TÖLLE
  • Publication number: 20150017073
    Abstract: The invention relates to an exhaust gas cleaning device (10) comprising a) a housing (14) through which an exhaust gas flow (12) can flow; b) an exhaust gas cleaning component (16) that is arranged in the housing (14), which component comprises a carrier (20) which has an end face (22, 24) on the inlet side and on the outlet side and through which the exhaust gas flow (12) can flow; c) at least one separation element (26, 40) that is arranged upstream of the exhaust gas cleaning component (16), which separation element separates an exhaust gas flow path into at least two parallel flow paths (28, 30); and d) at least one sealing means (38, 42) provided in the region of the end face (22) on the inlet side of the carrier (20) and/or of a downstream end of the separation element (26, 40), and that is suitable to counteract a cross flow of the exhaust flow (12) between the at least two parallel flow paths (28, 30).
    Type: Application
    Filed: February 8, 2013
    Publication date: January 15, 2015
    Inventor: Stefan Tölle
  • Patent number: 7578528
    Abstract: A configuration for sealing-off two fluid-carrying subassemblies, in particular for sealing-off a case, the inner space of which is filled with a first fluid and through the inner space of which there is led a pipeline filled with another fluid which flows into a construction space that is separated from the inner space filled with the first fluid by a case wall. Between a first sealing element and a second sealing element there is disposed a supporting ring, which, on each of its side faces assigned to the sealing elements, has a contour for the reception and diversion of a fluid volume which has flowed onto the supporting ring as a result of leakage in the region of the respectively assigned sealing element.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: August 25, 2009
    Assignee: Volkswagen AG
    Inventor: Stefan Tölle
  • Publication number: 20060108746
    Abstract: A configuration for sealing-off two fluid-carrying subassemblies, in particular for sealing-off a case, the inner space of which is filled with a first fluid and through the inner space of which there is led a pipeline filled with another fluid which flows into a construction space that is separated from the inner space filled with the first fluid by a case wall. The configuration allows effective sealing-off at a low outlay in terms of components, cost and assembly. Between a first sealing element and a second sealing element there is disposed a supporting ring, which, on each of its side faces assigned to the sealing elements, has a contour for the reception and diversion of a fluid volume which has flowed onto the supporting ring as a result of leakage in the region of the respectively assigned sealing element.
    Type: Application
    Filed: November 21, 2005
    Publication date: May 25, 2006
    Inventor: Stefan Tolle