Patents by Inventor Holger Renners

Holger Renners 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).

  • pH-regulated polyamide powder for cosmetic applications
    Patent number: 8293279
    Abstract: The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: October 23, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Thomas Schiffer, Holger Renners, Wolfgang Christoph, Franz-Erich Baumann, Joachim Muegge
  • Method of making and method of use of fine-grained polyarylene ether ketone powder
    Patent number: 7875234
    Abstract: A milling process for the preparation of fine-particled polyarylene ether ketone comprises milling a porous polyarylene ether ketone having a BET surface area of more than 1 m2/g.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: January 25, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Alexander Richter, Patrick Kreidler, Holger Renners, Wolfgang Christoph, Heinrich Temme, Christian Bierhaus
  • FINE-GRAINED POLYARYLENE ETHER KETONE POWDER
    Publication number: 20090280263
    Abstract: A milling process for the preparation of fine-particled polyarylene ether ketone comprises milling a porous polyarylene ether ketone having a BET surface area of more than 1 m2/g.
    Type: Application
    Filed: November 22, 2005
    Publication date: November 12, 2009
    Applicant: DEGUSSA Gmbh
    Inventors: Alexander Richter, Patric Kreidler, Holger Renners, Wolfgang Christoph, Heinrich Temme, Christian Bierhaus
  • PH-REGULATED POLYAMIDE POWDER FOR COSMETIC APPLICATIONS
    Publication number: 20080279904
    Abstract: The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same.
    Type: Application
    Filed: July 15, 2008
    Publication date: November 13, 2008
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Thomas SCHIFFER, Holger Renners, Wolfgang Christoph, Franz-Erich Baumann, Joachim Muegge
  • Polyamide powder with long-lasting, consistently good flowability
    Patent number: 7211615
    Abstract: A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is less than or equal to 1%, determined by ISO 787/2.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: May 1, 2007
    Assignee: Degussa AG
    Inventors: Franz-Erich Baumann, Sylvia Monsheimer, Maik Grebe, Wolfgang Christoph, Dirk Heinrich, Holger Renners, Heinz Scholten, Thomas Schiffer, Joachim Muegge, Johannes Chiovaro
  • Thermoplastic powder formulation for coatings having a metallic colored appearance
    Publication number: 20060135670
    Abstract: A thermoplastic polymer powder composition containing a thermoplastic polymer or a powder blend of two or more thermoplastic polymers having an average particle diameter of from 40 to 250 ?m, and from 0.01 to 10 parts of a metal powder.
    Type: Application
    Filed: November 14, 2005
    Publication date: June 22, 2006
    Applicant: DEGUSSA AG
    Inventors: Alexander Richter, Wolfgang Franz, Holger Renners, Thomas Schiffer
  • Polyamide powder with long-lasting, consistently good flowability
    Publication number: 20040204531
    Abstract: A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is less than or equal to 1%, determined by ISO 787/2.
    Type: Application
    Filed: November 5, 2003
    Publication date: October 14, 2004
    Applicant: DEGUSSA AG
    Inventors: Franz-Erich Baumann, Sylvia Monsheimer, Maik Grebe, Wolfgang Christoph, Dirk Heinrich, Holger Renners, Heinz Scholten, Thomas Schiffer, Joachim Muegge, Johannes Chiovaro
  • pH-regulated polyamide powder for cosmetic applications
    Publication number: 20030114636
    Abstract: The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same.
    Type: Application
    Filed: December 12, 2002
    Publication date: June 19, 2003
    Applicant: Degussa AG
    Inventors: Thomas Schiffer, Holger Renners, Wolfgang Christoph, Franz-Erich Baumann, Joachim Muegge