Patents by Inventor Dietrich Willem Van Der Plas

Dietrich Willem Van Der Plas 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).

  • Method and apparatus for the production of aluminum
    Patent number: 7867373
    Abstract: Disclosed is a method for the continuous production of aluminum from alumina including a first step of converting alumina (Al2O3) into aluminum sulfide (Al2S3) and a second step of separation of aluminum from aluminum sulfide in a separating reactor. Wherein in the first step in a conversion reactor alumina is dissolved in a molten salt to form a melt and a sulfur containing gas is fed through the melt whereby the sulfur containing gas acts as a reagent to convert at least part of the alumina into aluminum sulfide and at least part of the melt is used in the second step. Further the invention relates to an apparatus for operating the method.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: January 11, 2011
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventors: Dietrich Willem Van Der Plas, Yanping Xiao
  • Process For the Electrolysis of Aluminiumsulfide
    Publication number: 20080202939
    Abstract: Process for the electrolysis of Al2S3, using a bath of molten salt, preferably a bath of molten chloride salt, in which Al2S3 is dissolved characterized in that measures are taken to improve the electrical conductivity of the bath, so as to enable an increase in the current density in the bath.
    Type: Application
    Filed: March 31, 2004
    Publication date: August 28, 2008
    Applicant: Corus Aluminum Walzprodukte GmbH
    Inventors: Dietrich Willem Van Der Plas, Steven Christian Lans, Markus Andreas Reuter, Mpia Cyril Roger Mambote, Anthonie Van Sandwijk, Yanping Xiao