Patents by Inventor Udo Dünger

Udo Dünger 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).

  • Mixing elements with a reduced structural depth for static mixers
    Patent number: 11273419
    Abstract: The invention relates to mixing elements with a reduced structural depth for static mixers, to static mixers comprising at least two mixing elements with a reduced structural depth, and to a method for mixing fluids using a mixing element with a reduced structural depth or a static mixer comprising at least two mixing elements with a reduced structural depth. In the mixing elements, the thickness of the transverse strut at its thickest point is maximally 0.9 to 1.1 times the thickness of the webs multiplied by the cosine of half the opening angle O divided by the sine of the whole opening angle O.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: March 15, 2022
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Udo Dünger, Thomas König
  • MIXING ELEMENTS WITH A REDUCED STRUCTURAL DEPTH FOR STATIC MIXERS
    Publication number: 20190232239
    Abstract: The invention relates to mixing elements with a reduced structural depth for static mixers, to static mixers comprising at least two mixing elements with a reduced structural depth, and to a method for mixing fluids using a mixing element with a reduced structural depth or a static mixer comprising at least two mixing elements with a reduced structural depth. In the mixing elements, the thickness of the transverse strut at its thickest point is maximally 0.9 to 1.1 times the thickness of the webs multiplied by the cosine of half the opening angle O divided by the sine of the whole opening angle O.
    Type: Application
    Filed: October 4, 2017
    Publication date: August 1, 2019
    Inventors: Udo Dünger, Thomas König
  • METHOD FOR INCORPORATING SOLIDS INTO POLYMERS
    Publication number: 20120214931
    Abstract: The invention relates to a method for incorporating solids into polymers by means of a tightly meshing twin-screw or multi-screw compounder for producing a polymer composite material. The method according to the invention is especially used to incorporate solids, such as carbon nanotubes, that significantly increase the viscosity in the polymer melt.
    Type: Application
    Filed: September 1, 2010
    Publication date: August 23, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Udo Dünger, Thomas König
  • 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
  • METHOD FOR PRODUCING COMPOSITE MATERIALS HAVING REDUCED RESISTANCE AND COMPRISING CARBON NANOTUBES
    Publication number: 20110204296
    Abstract: The present invention relates to a process for producing a composite having a reduced electrical resistance which comprises providing a mixture comprising a fluid material and carbon nanotubes (CNTs) having a predeterminable size distribution, and subjecting the mixture to a minimum stress in a dispersing machine, wherein the minimum stress is determined empirically as a function of the predetermined size distribution.
    Type: Application
    Filed: August 7, 2009
    Publication date: August 25, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Carsten Conzen, Michael Bierdel, Udo Dünger, Maren Heinemann, Thomas König, Björn Walter, Jörg Metzger, Peter Heidemeyer, Werner Wiedmann