Patents by Inventor Jost Halstenberg

Jost Halstenberg 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).

  • Process for the utilization of vanadium from chromium ore as vanadium (V) oxide
    Patent number: 7157063
    Abstract: Process wherein the vanadium present in the chromium ore chromite is recovered as vanadium pentoxide during the course of the fusion of the chromium ore with alkali and its work-up to produce sodium chromate solution and sodium dichromate.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: January 2, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rainer Weber, Hans-Dieter Block, Michael Batz, Jost Halstenberg, Michael Lumm, Roland-Luiz Roth, Dawie Van Der Merre
  • Process for the utilization of vanadium from chromium ore as vanadium (V) oxide
    Publication number: 20040026330
    Abstract: Process wherein the vanadium present in the chromium ore chromite is recovered as vanadium pentoxide during the course of the fusion of the chromium ore with alkali and its work-up to produce sodium chromate solution and sodium dichromate.
    Type: Application
    Filed: April 1, 2003
    Publication date: February 12, 2004
    Applicant: Bayer Aktiengesellschaft
    Inventors: Rainer Weber, Hans-Dieter Block, Michael Batz, Jost Halstenberg, Michael Lumm, Roland-Luiz Roth, Dawie Van Der Merre
  • Process for the production of sodium dichromate
    Patent number: 5250274
    Abstract: The invention relates to a process for the production of sodium dichromate and sodium dichromate solutions by oxidative roasting of chrome ores under alkaline conditions, leaching of the furnace clinker obtained with water or an aqueous chromate-containing solution, adjustment of the pH to from 7 to 9.5, removal of the insoluble constituents by filtration, a sodium monochromate solution being obtained, conversion of the monochromate ions of this solution into dichromate ions by acidification and crystallization of sodium dichromate by concentration of this solution, characterized in that the acidification is carried out with carbon dioxide under pressure with removal of sodium hydrogen carbonate, the remaining solution is then very largely freed from sodium monochromate by cooling to a temperature below 10.degree. C.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: October 5, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Norbert Lonhoff, Bernhard Spreckelmeyer, Hans-Dieter Block, Rainer Weber, Jost Halstenberg, Bernd Rosenow