Patents by Inventor Stefan Kempka

Stefan Kempka 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).

  • Process for the absorption of a volatile substance in a liquid absorbent
    Patent number: 8932478
    Abstract: To absorb a volatile substance from a gas phase in a liquid absorbent, the gas phase is brought into contact with a film of an absorbent which comprises an ionic liquid and a wetting-promoting additive. The process can be used in absorption refrigerating machines.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: January 13, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Matthias Seiler, Bernd Glöckler, Peter Schwab, Stefan Kempka
  • Use of hydrophilic organomodified siloxanes as a processing aid for melt granulation
    Patent number: 8580225
    Abstract: Use of organomodified polysiloxanes which have at least three different polyether radicals, at least two of these polyether radicals differing by at least 9% by mass in the proportion of ethylene oxide units therein in the total weight of the polyether radical, as a release agent or release agent constituent in melt granulation.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: November 12, 2013
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Rene Haensel, Sabine Giessler-Blank, Stefan Kempka
  • USE OF HYDROPHILIC ORGANOMODIFIED SILOXANES AS A PROCESSING AID FOR MELT GRANULATION
    Publication number: 20130174380
    Abstract: Use of organomodified polysiloxanes which have at least three different polyether radicals, at least two of these polyether radicals differing by at least 9% by mass in the proportion of ethylene oxide units therein in the total weight of the polyether radical, as a release agent or release agent constituent in melt granulation.
    Type: Application
    Filed: July 5, 2012
    Publication date: July 11, 2013
    Applicant: EVONIK GOLDSCHMIDT GMBH
    Inventors: Rene Haensel, Sabine Giessler-Blank, Stefan Kempka
  • Process for the Absorption of a Volatile Substance in a Liquid Absorbent
    Publication number: 20110000236
    Abstract: To absorb a volatile substance from a gas phase in a liquid absorbent, the gas phase is brought into contact with a film of an absorbent which comprises an ionic liquid and a wetting-promoting additive. The process can be used in absorption refrigerating machines.
    Type: Application
    Filed: December 3, 2008
    Publication date: January 6, 2011
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Matthias Seiler, Bernd Glockler, Peter Schwab, Stefan Kempka
  • LIQUID CONDUCTIVITY ADDITIVES FOR NONAQUEOUS HYDRAULIC OILS
    Publication number: 20100120640
    Abstract: Composition comprising nonaqueous hydraulic oils or lubricants and one or more conductivity additives which form clear solutions or mixtures with the hydraulic oil and optionally further customary additives for increasing the conductivity of nonaqueous hydraulic oils and/or lubricants.
    Type: Application
    Filed: May 8, 2009
    Publication date: May 13, 2010
    Inventors: Peter Schwab, Bernd Weyerhausen, Stefan Kempka, Kerstin Hell
  • PERFORMANCE ADDITIVES FOR IMPROVING THE WETTING PROPERTIES OF IONIC LIQUIDS ON SOLID SURFACES
    Publication number: 20100029519
    Abstract: Composition containing at least one ionic liquid and at least one performance additive and if appropriate a solvent and/or of further auxiliaries or additives and its use as wetting agent for solid surfaces.
    Type: Application
    Filed: February 2, 2009
    Publication date: February 4, 2010
    Inventors: Peter Schwab, Stefan Kempka, Matthias Seiler, Bernd Gloeckler
  • USE OF IONIC LIQUIDS FOR THE LUBRICATION OF COMPONENTS IN WIND POWER PLANTS
    Publication number: 20090036334
    Abstract: The invention relates to the use of lubricants containing at least one ionic liquid as lubricants in components of a wind power plant.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 5, 2009
    Inventors: Peter Schwab, Stefan Kempka, Rene Hansel, Andreas Hoff, Axel Kobus