Patents by Inventor Albertus H. Baas

Albertus H. Baas 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 preparation of a ferronickel concentrate
    Patent number: 4490174
    Abstract: A ferronickel concentrate is produced by reducing a lateritic ore comprising less than 1.5% w of nickel at a temperature of from 920.degree. to 1120.degree. C. with a CO/CO.sub.2 mixture in the presence of a S-compound, such as Na.sub.2 SO.sub.4 or FeSO.sub.4 or FeS, and subjecting the reduced product to magnetic separation.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: December 25, 1984
    Inventors: Williem J. Crama, Albertus H. Baas
  • Process for the recovery of pentavalent vanadium compounds from acid catalyst extracts
    Patent number: 4436706
    Abstract: A process for the preparation of pentavalent vanadium compounds by reprocessing acid extracts of vanadium-containing catalysts spent in the hydrotreatment of crude or residual oils, characterized in that extracts containing trivalent and tetravalent vanadium are oxidized at a pH between 0.5 and 2.6 with an oxygen-containing gas to form concentrates of tetravalent vanadium, after which oxidation is carried out at a pH between 2.6 and 4.0 with an oxygen-containing gas to form concentrates of pentavalent vanadium and in that solid vanadium compounds are subsequently recovered by separating them from the liquid phase.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: March 13, 1984
    Assignee: Shell Internationale Research Maatschappij B. V.
    Inventors: Lambertus J. G. Nacken, Albertus H. Baas