Patents by Inventor Jurgen Steyer

Jurgen Steyer 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).

  • Raw material with a high content of aluminum oxide, and method of manufacturing the raw material
    Patent number: 7015167
    Abstract: A raw material with a high content of aluminum oxide has the following composition, in weight-percent, based on dry weight: Al2O3 ?50–80% MgO ??2–15% SiO2 ??1–15% CaO 0.5–20% Fe2O3 0.5–2% Na2O 0.5–2% Al (metallic) 0.1–2% AlN 0.1–1% K2O 0.1–1.5% F 0.1–2% Cl 0.1–0.8% balance in total, not to exceed ?5% loss on ignition, not to exceed 15% The main mineral constituents of the raw material are, in weight-percent aluminum hydroxide 20–60% corundum ?-Al2O3 10–40% spinel MgAl2O4 ?5–40% Specifically, the aluminum hydroxide is present as aluminum mono-hydroxide Al2O3.H2O and aluminum tri-hydroxide Al2O3.3H2O in a weight ratio exceeding 0.25.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: March 21, 2006
    Assignee: Aluminium-Salzschlacke Aufbereitungs GmbH
    Inventors: Reinhard Feige, Gerhard Merker, Jurgen Steyer
  • Raw material with a high content of aluminum oxide, and method of manufacturing the raw material
    Publication number: 20040259718
    Abstract: A raw material with a high content of aluminum oxide has the following composition, in weight-percent, based on dry weight: 1 Al2O3  50-80% MgO   2-15% SiO2   1-15% CaO 0.5-20% Fe2O3 0.5-2% Na2O 0.5-2% Al (metallic) 0.1-2% AlN 0.1-1% K2O 0.1-1.5% F 0.1-2% Cl 0.1-0.
    Type: Application
    Filed: January 7, 2004
    Publication date: December 23, 2004
    Applicant: Aluminium-Salzschlacke Aufbereitungs GmbH
    Inventors: Reinhard Feige, Gerhard Merker, Jurgen Steyer