Patents by Inventor Stefanie Rosenkranz

Stefanie Rosenkranz 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: 10208268
    Abstract: The disclosure relates to an improved grease composition for use in constant velocity joints, especially ball joints and/or tripod joints used in the drivelines of motor vehicles, with the grease composition comprising at least one base oil, at least one simple or complex soap thickener, at least one zinc sulphonate, at least one molybdenum dithiocarbamate in the solid state, and at least one molybdenum dithiophosphate.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: February 19, 2019
    Assignee: GKN Driveline International GmbH
    Inventors: Jisheng E, Stefanie Rosenkranz, Jörg Berlingen, Frank Reher
  • Publication number: 20180051227
    Abstract: The disclosure relates to an improved grease composition for use in constant velocity joints, especially ball joints and/or tripod joints used in the drivelines of motor vehicles, with the grease composition comprising at least one base oil, at least one simple or complex soap thickener, at least one zinc sulphonate, at least one molybdenum dithiocarbamate in the solid state, and at least one molybdenum dithiophosphate.
    Type: Application
    Filed: March 31, 2015
    Publication date: February 22, 2018
    Inventors: Jisheng E., Stefanie Rosenkranz, Jörg Berlingen, Frank Reher
  • Publication number: 20110021391
    Abstract: A grease composition which has a good compatibility with boots made of rubber or thermoplastic elastomer, and which also gives enhanced endurance, low wear and low friction in use in constant velocity joints is disclosed. A grease composition is suggested comprising a) at least one base oil; b) 5% by weight to 40% by weight of at least one calcium sulphonate soap and/or calcium sulphonate complex soap as a thickener; and c) at least one molybdenum containing additive.
    Type: Application
    Filed: October 1, 2010
    Publication date: January 27, 2011
    Inventors: Jisheng E, Frank Reher, Stefanie Rosenkranz, Bernd Falk, Lothar Gasper, Mario Witzdam
  • Publication number: 20090247437
    Abstract: In order to provide for a grease composition reducing or preventing noise, vibration and harshness (NVH) in the driveline, a grease composition for use in constant velocity joints is suggested, comprising a) a base oil composition; b) at least one tri-nuclear molybdenum compound of the formula MO3SkLnQZ, wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values. c) at least one further molybdenum containing compound; and d) at least one simple and/or complex soap thickener.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 1, 2009
    Inventors: Jisheng E., Frank Resher, Leandro Muntada, Stefanie Rosenkranz
  • Publication number: 20090247435
    Abstract: To solve the problem to provide for a new grease composition giving low wear and low friction primarily to constant velocity joints, a grease composition is suggested comprising a) a base oil composition; and b) 0.25% by weight to 5% by weight of at least one tri-nuclear molybdenum corn pound of the formula Mo3SkLnQz wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, alcohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 1, 2009
    Inventors: Jisheng E, Frank Reher, Stefanie Rosenkranz