Patents by Inventor Stephan Wieber

Stephan Wieber 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).

  • Publication number: 20240034855
    Abstract: Nanoparticle compositions contain a graphene-based material. A preparation process involves providing several components and milling a mixture. The nanoparticle compositions can be used as a lubricant additive to improve tribological performance, in particular to improve anti-friction and anti-wear performance on metal parts. A corresponding lubricant composition contains these nanoparticle compositions.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 1, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Verena BREUERS, Daniel Neß, Stephan Wieber, Valeri Leich, Jonas Hönig, Michael Gerhard Hagemann, Willibald Wombacher, Christian Däschlein
  • Publication number: 20220332998
    Abstract: The invention relates to the use of a polymeric-inorganic nanoparticle composition as a heat transfer fluid in battery or other electrical equipment systems. The electrical equipment can be in particular electric batteries, electric motors, electric vehicle transmissions, electric transformers, electric capacitors, fluid-filled transmission lines, fluid-filled power cables, computers and power electronics such as electric power converters.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 20, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Ulrich Fischer, Daniel Neß, Stephan Wieber, Michael Gerhard Hagemann, Günter Schmitt, Jennifer Schrantz, Katharina Dauth, Can Metehan Turhan
  • Publication number: 20220306924
    Abstract: The invention relates to the use of a nanoparticle composition as a heat transfer fluid in battery or other electrical equipment systems. The electrical equipment can be in particular electric batteries, electric motors, electric vehicle transmissions, electric transformers, electric capacitors, fluid-filled transmission lines, fluid-filled power cables, computers and power electronics such as electric power converters.
    Type: Application
    Filed: July 13, 2020
    Publication date: September 29, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Ulrich Fischer, Daniel Neß, Stephan Wieber, Michael Gerhard Hagemann, Günter Schmitt, Stefan Heberer, Jennifer Schrantz, Can Metehan Turhan
  • Patent number: 11198833
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant compositions comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve extreme pressure performance and friction reduction on metal parts.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: December 14, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Wieber, Christofer Philipp Kronschnabl, Ronny Sondjaja, Sofia Sirak, Daniel Neß, Roland Wilkens, Günter Schmitt, Can Metehan Turhan
  • Patent number: 11180712
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant composition comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve anti-friction performance on metal parts.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 23, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Stephan Wieber, Sofia Sirak, Daniel Neß, Roland Wilkens, Rebecca Jüstel, Günter Schmitt, Michael Hagemann
  • Publication number: 20210062106
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant composition comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve anti-friction performance on metal parts.
    Type: Application
    Filed: January 22, 2019
    Publication date: March 4, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Stephan Wieber, Sofia Sirak, Daniel Neß, Roland Wilkens, Rebecca Jüstel, Günter Schmitt, Michael Hagemann
  • Publication number: 20200369977
    Abstract: The invention relates to polymeric-inorganic nanoparticle compositions and preparation processes thereof. The invention also relates to an additive and lubricant compositions comprising these polymeric-inorganic nanoparticle compositions, as well as to the use of these polymeric-inorganic nanoparticle compositions in an oil lubricant formulation to improve tribological performance, in particular to improve extreme pressure performance and friction reduction on metal parts.
    Type: Application
    Filed: January 22, 2019
    Publication date: November 26, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Stephan Wieber, Christofer Philipp Kronschnabl, Ronny Sondjaja, Sofia Sirak, Daniel Neß, Roland Wilkens, Günter Schmitt, Can Metehan Turhan
  • Patent number: 10793731
    Abstract: The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: October 6, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Stefan Bernhardt, Thomas Hasskerl, Dirk Poppe, Stephan Wieber
  • Patent number: 10695978
    Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. The particles may be inorganic particles, for example sand or a metal powder, or polymeric particulate, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 30, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Dirk Poppe, Andrea Fruth, Stefan Bernhardt, Stephan Wieber
  • 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: 10385217
    Abstract: The present invention relates to formulations comprising at least one hydridosilane of the generic formula SinH2n+2 with n=7-10 and at least one hydridosilane oligomer, to processes for preparation thereof and to the use thereof.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 20, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Stephan Traut, Matthias Patz, Stephan Wieber, Paul Henrich Wöbkenberg, Joachim Erz, Jutta Hessing
  • Publication number: 20190126542
    Abstract: The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. The particles may be inorganic particles, for example sand or a metal powder, or polymeric particulate, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers.
    Type: Application
    Filed: April 4, 2017
    Publication date: May 2, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Dirk POPPE, Andrea FRUTH, Stefan BERNHARDT, Stephan WIEBER
  • Publication number: 20190127598
    Abstract: The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 2, 2019
    Applicant: Evonik Röhm GmbH
    Inventors: Stefan Bernhardt, Thomas HASSKERL, Dirk POPPE, Stephan WIEBER
  • Patent number: 9865461
    Abstract: The present invention relates to a liquid-phase process for producing structured silicon- and/or germanium-containing coatings by the application to a substrate of at least one coating composition, the partial activation of the resulting coating on the coated substrate, and oxidation of non-activated coating on the substrate, to the coats produced by the process and to their use.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: January 9, 2018
    Assignee: Evonik Degussa GmbH
    Inventors: Christoph Mader, Paul Henrich Woebkenberg, Joachim Erz, Stephan Traut, Matthias Patz, Michael Coelle, Stephan Wieber, Patrik Stenner, Janette Klatt, Odo Wunnicke
  • Patent number: 9745200
    Abstract: The invention relates to a process for preparing higher halosilanes by disproportionation of lower halosilanes. The invention further relates to a process for preparing higher hydridosilanes from the higher halosilanes prepared by disproportionation. The invention further relates to mixtures containing at least one higher halosilane or at least one higher hydridosilane prepared by the process described. Finally, the invention relates to the use of such a mixture containing at least one higher hydridosilane for producing electronic or optoelectronic component layers or for producing silicon-containing layers.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: August 29, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Stephan Wieber, Matthias Patz, Harald Stueger, Christoph Walkner
  • Patent number: 9464099
    Abstract: The present invention provides processes for preparing carbon-containing hydridosilanes, in which an optionally boron- or phosphorus-doped hydridosilane is reacted without catalyst and reducing agent with at least one carbon source selected from linear, branched or cyclic carbosilanes, halogenated hydrocarbons, carbenes, alkyl azides, diazomethane, dimethyl sulphate or alcohols, the carbon-containing hydridosilane oligomers obtainable by the process and the use thereof.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: October 11, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Stephan Traut, Stephan Wieber, Matthias Patz, Michael Coelle, Harald Stueger, Christoph Walkner
  • Patent number: 9362112
    Abstract: The invention relates to a process for producing p-doped silicon layers, especially those silicon layers which are produced from liquid silane-containing formulations. The invention further relates to a substrate coated with a p-doped silicon layer. The invention additionally relates to the use of particular dopants based on boron compounds for p-doping of a silicon layer.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: June 7, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Stephan Wieber, Matthias Patz, Harald Stueger, Jasmin Lehmkuhl
  • Publication number: 20160155637
    Abstract: The present invention relates to a liquid-phase process for producing structured silicon- and/or germanium-containing coatings by the application to a substrate of at least one coating composition, the partial activation of the resulting coating on the coated substrate, and oxidation of non-activated coating on the substrate, to the coats produced by the process and to their use.
    Type: Application
    Filed: June 6, 2014
    Publication date: June 2, 2016
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Christoph MADER, Paul Henrich WOEBKENBERG, Joachim ERZ, Stephan TRAUT, Matthias PATZ, Michael COELLE, Stephan WIEBER, Patrik STENNER, Janette KLATT, Odo WUNNICKE
  • Publication number: 20160145440
    Abstract: The present invention relates to formulations comprising at least one hydridosilane of the generic formula SinH2n+2 with n=7-10 and at least one hydridosilane oligomer, to processes for preparation thereof and to the use thereof.
    Type: Application
    Filed: June 12, 2014
    Publication date: May 26, 2016
    Applicant: Evonik Degussa GmbH
    Inventors: Stephan TRAUT, Matthias PATZ, Stephan WIEBER, Paul Henrich WÖBKENBERG, Joachim ERZ