Patents by Inventor Eduard Visnow

Eduard Visnow 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: 11878937
    Abstract: Described is a process for the refinement of a quartz powder, comprising the step of separating microparticles of refractory minerals, in particular minerals containing rare earth metal compounds, from the quartz powder by an elutriation step.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: January 23, 2024
    Assignees: Heraeus Quarzglas GmbH & Co. KG, Heraeus Conamic UK Limited
    Inventors: Ian George Sayce, Michael Schindler, Fabian Schildt, Eduard Visnow
  • Publication number: 20220306513
    Abstract: In a method of manufacturing a tube of quartz glass by molding a hollow cylinder having a wall thickness of at least 20 mm, the cylinder is continuously fed under rotation about a rotational axis into a heating zone at a relative feed rate VC, softened and radially expanded under the effect of a gas pressure. A tube strand is continuously formed and is withdrawn at a withdrawal rate VT. In order to mold thick-walled initial hollow cylinders of quartz glass into tubes with larger diameter, the gas pressure is used as an actuating variable of a diameter regulation for the tube outer diameter or for a geometrical correlated parameter thereof, and in a pressure build-up phase the gas pressure is gradually increased from a lower initial value to a higher final value, and that the following applies to the ratio of VC and VT:VT=VC±0.2·VC.
    Type: Application
    Filed: March 29, 2022
    Publication date: September 29, 2022
    Applicant: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Matthias SÖHN, Boris GROMANN, Eduard VISNOW
  • Publication number: 20210009461
    Abstract: Described is a process for the refinement of a quartz powder, comprising the step of separating microparticles of refractory minerals, in particular minerals containing rare earth metal compounds, from the quartz powder by an elutriation step.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 14, 2021
    Applicants: Heraeus Quarzglas GmbH & Co. KG, Heraeus Conamic UK Limited
    Inventors: Ian George Sayce, Michael Schindler, Fabian Schildt, Eduard Visnow