Patents by Inventor Markus Pridohl

Markus Pridohl 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).

  • Patent number: 10688718
    Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: June 23, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Wieber, Dirk Poppe, Stefan Bernhardt, Markus Pridöhl, Sven Balk, Christian Meier, Senada Schaack, Thomas Hasskerl
  • Publication number: 20190299520
    Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.
    Type: Application
    Filed: September 11, 2017
    Publication date: October 3, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Stephan Wieber, Dirk POPPE, Stefan BERNHARDT, Markus PRIDOHL, Sven BALK, Chrisian MEIER, Senada SCHAACK, Thomas HASSKERL
  • Patent number: 8524342
    Abstract: The invention relates to plastics composite moldings obtainable via welding in an alternating electromagnetic field, in which the weld is obtained with the aid of a plastics material which comprises nano-scale, magnetic oxidic particles, which are composed of aggregated primary particles, and where the primary particles are composed of magnetic metal oxide domains whose diameter is from 2 to 100 nm in a non-magnetic metal oxide matrix or non-magnetic metalloid oxide matrix.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: September 3, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Harald Häger, Markus Pridöhl, Guido Zimmermann, Karl Kuhmann, Rainer Göring
  • Publication number: 20120111499
    Abstract: The invention relates to hybrid materials comprising polymers which envelop nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders, to a process for producing these materials and to their use.
    Type: Application
    Filed: January 17, 2012
    Publication date: May 10, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Sebastian ROOS, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
  • Publication number: 20100264377
    Abstract: An aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g is provided. The aggregated crystalline silicon may be doped with a doping component and can be used to produce electronic components.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 21, 2010
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Markus Pridöhl, Paul Roth, Hartmut Wiggers, Frank-Martin Petrat, Michael Krämer
  • Publication number: 20090230347
    Abstract: Formulation comprising a polymerizable monomer and/or a polymer and, dispersed therein, a superparamagnetic powder, which comprises aggregated primary particles, the primary particles being built up from magnetic metal oxide domains having a diameter of from 2 to 100 nm in a nonmagnetic metal oxide or metalloid oxide matrix. Process for heating the formulation in a magnetic or electromagnetic alternating field. Use of the formulation as an adhesive composition.
    Type: Application
    Filed: November 29, 2005
    Publication date: September 17, 2009
    Applicant: DEGUSSA GmbH
    Inventors: Markus Pridöhl, Guido Zimmermann, Michael Kröll, Harald Häger
  • Publication number: 20090165949
    Abstract: The invention relates to a method of bonding different materials of construction using hybrid materials comprising nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders enveloped or in part not enveloped by poly(meth)acrylates, and to their use.
    Type: Application
    Filed: November 21, 2006
    Publication date: July 2, 2009
    Applicant: Evonik Roehm GmbH
    Inventors: Sebastian Roos, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
  • Publication number: 20090159834
    Abstract: The invention relates to hybrid materials comprising polymers which envelop nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders, to a process for producing these materials and to their use.
    Type: Application
    Filed: November 21, 2006
    Publication date: June 25, 2009
    Applicant: EVONIK ROEHM GMBH
    Inventors: Sebastian Roos, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
  • Patent number: 7288501
    Abstract: Process and apparatus for the thermal treatment of pulverulent substances, in which the pulverulent substance is dispersed in a carrier gas and is passed in a continuous manner through a heated reactor where it is thermally treated and is then quenched by a cooling medium and is collected in a gas-solids separating unit.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: October 30, 2007
    Assignee: Umicore AG & Co., KG
    Inventors: Emmanuel Auer, Peter Biberbach, Michael Gross, Andreas Gutsch, Markus Pridöhl, Karsten Ruth, Edwin Staab
  • Publication number: 20070094757
    Abstract: Aggregated crystalline silicon powder with a BET surface area of 20 to 150 m2/g. It is prepared by subjecting at least one vaporous or gaseous silane and optionally at least one vaporous or gaseous doping material, an inert gas and hydrogen to heat in a hot wall reactor, cooling the reaction mixture or allowing the reaction mixture to cool and separating the product from gaseous substances in the form of a powder, wherein the proportion of silane is between 0.1 and 90 wt.%, with respect to the sum of silane, doping material, hydrogen and inert gases, and wherein the proportion of hydrogen, with respect to the sum of hydrogen, silane, inert gas and doping material, is in the range 1 mol. % to 96 mol. %. It can be used to produce electronic components.
    Type: Application
    Filed: November 13, 2004
    Publication date: April 26, 2007
    Applicant: Degussa AG
    Inventors: Markus Pridohl, Paul Roth, Hartmut Wiggers, Frank-Martin Petrat, Michael Kramer
  • Publication number: 20040249037
    Abstract: The invention concerns an adhesive composition for producing thermoset products, capable of being heated by means of an electric field, a magnetic field, an electromagnetic field or an alternating electromagnetic field, and containing filler particles which are metallic, ferromagnetic, ferrimagnetic, superparamagnetic or paramagnetic. Said adhesive composition can be hardened under the action of heat to form a high-resistance stable adhesive assembly, said resulting adhesive assemblies capable of being likewise dissociated under the action of heat.
    Type: Application
    Filed: April 21, 2004
    Publication date: December 9, 2004
    Inventors: Jana Kolbe, Thomas Kowalik, Matthias Popp, Monika Sebald, Oliver Schorsch, Stefan Heberer, Markus Pridohl, Guido Zimmermann, Andreas Hartwig, Erwin Born
  • Publication number: 20020160909
    Abstract: Process and apparatus for the thermal treatment of pulverulent substances, in which the pulverulent substance is dispersed in a carrier gas and is passed in a continuous manner through a heated reactor where it is thermally treated and is then quenched by a cooling medium and is collected in a gas-solids separating unit.
    Type: Application
    Filed: April 25, 2002
    Publication date: October 31, 2002
    Inventors: Emmanuel Auer, Peter Biberbach, Michael Gross, Andreas Gutsch, Markus Pridohl, Karsten Ruth, Edwin Staab