Patents by Inventor Silke Stoschek

Silke Stoschek 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).

  • Liquid detergent and cleaning agent composition comprising a multi-coated bleach particle
    Patent number: 7435714
    Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: October 14, 2008
    Assignee: Evonik Degussa GmbH
    Inventors: Ulrike Kottke, Silke Stoschek, Klaus Zimmermann, Ralph Overdick, Michael Fender, Harald Jakob
  • Liquid detergent and cleaning agent composition
    Publication number: 20060148669
    Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.
    Type: Application
    Filed: December 11, 2003
    Publication date: July 6, 2006
    Applicant: Degussa AG
    Inventors: Nee Kunz Ulrike Kottke, Silke Stoschek, Klaus Zimmermann, Ralph Overdick, Michael Fender, Harald Jakob