Patents by Inventor Sigrun Stein

Sigrun Stein 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).

  • Production of dispersions containing carbon nanotubes
    Patent number: 9540524
    Abstract: Process for the preparation of stable suspensions and dispersions of carbon nanotubes, and dispersions prepared by the process.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 10, 2017
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Daniel Rudhardt, Stefanie Eiden, Sigrun Stein, Gertrud Ott
  • Fine-particle, stable suspensions of functionalized, completely or partially hydrogenated nitrile rubbers
    Patent number: 9120918
    Abstract: Novel stable aqueous suspensions of a functionalized, completely or partially hydrogenated nitrile rubber are provided with very low emulsifier content and small particle diameter, furtheron a process for production thereof and the use thereof for producing composite materials via coating of substrate materials with the suspension.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 1, 2015
    Assignee: LANXESS DEUTSCHLAND GMBH
    Inventors: Matthias Soddemann, Daniel Gordon Duff, Lars Krueger, Sigrun Stein
  • Fine-particle, stable suspensions of functionalized, completely or partially hydrogenated nitrile rubbers
    Publication number: 20140114011
    Abstract: Novel stable aqueous suspensions of a functionalized, completely or partially hydrogenated nitrile rubber are provided with very low emulsifier content and small particle diameter, furtheron a process for production thereof and the use thereof for producing composite materials via coating of substrate materials with the suspension.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Matthias SODDEMANN, Daniel Gordon DUFF, Lars KRUEGER, Sigrun STEIN
  • Fine-particle, stable suspensions of functionalized, completely or partially hydrogenated nitrile rubbers
    Patent number: 8642687
    Abstract: Novel stable aqueous suspensions of a functionalized, completely or partially hydrogenated nitrite rubber are provided with very low emulsifier content and small particle diameter, furtheron a process for production thereof and the use thereof for producing composite materials via coating of substrate materials with the suspension.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: February 4, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventors: Matthias Soddemann, Daniel Gordon Duff, Lars Krueger, Sigrun Stein
  • PRODUCTION OF DISPERSIONS CONTAINING CARBON NANOTUBES
    Publication number: 20130200310
    Abstract: Process for the preparation of stable suspensions and dispersions of carbon nanotubes, and dispersions prepared by the process.
    Type: Application
    Filed: October 4, 2011
    Publication date: August 8, 2013
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Daniel Rudhardt, Stefanie Eiden, Sigrun Stein, Gertrud Ott
  • METHOD FOR DISPERSING NANOPARTICLES IN FLUID MEDIA
    Publication number: 20110315935
    Abstract: Process for dispersing nanoparticles, such as carbon nanotubes, in a medium-viscosity fluid by passing the fluid and nanoparticles through one or more multiscrew extruders having one or more kneading zones
    Type: Application
    Filed: March 12, 2010
    Publication date: December 29, 2011
    Applicant: Bayer Technology Services GMBH
    Inventors: Sigrun Stein, Maren Heinemann, Thomas König, Udo Dünger
  • Fine-particle, stable suspensions of functionalized, completely or partially hydrogenated nitrile rubbers
    Publication number: 20110237717
    Abstract: Novel stable aqueous suspensions of a functionalized, completely or partially hydrogenated nitrite rubber are provided with very low emulsifier content and small particle diameter, furtheron a process for production thereof and the use thereof for producing composite materials via coating of substrate materials with the suspension.
    Type: Application
    Filed: November 10, 2010
    Publication date: September 29, 2011
    Applicant: LANXESS Deutschland GmbH
    Inventors: Matthias Soddemann, Daniel Gordon Duff, Lars Krueger, Sigrun Stein