Patents by Inventor Wladimir A. Mardones Parra

Wladimir A. Mardones Parra 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 of froth flotation using a methylene bisxanthate as a collector reagent
    Patent number: 4886595
    Abstract: A process for froth flotation for the recovery of sulfide minerals, or sulfidized oxide minerals, from their ores utilizing a methylene bisxanthate as a collector reagent, either alone or in combination with other known collector reagents in the froth flotation of an aqueous pulp of such ores.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: December 12, 1989
    Assignee: Establecimientos Industrales Quimicos Oxiquim S.A.
    Inventors: Eugenio A. Saphores Wiedmaier, Arturo G. Gleisner Klempau, Juan C. Vega de Kuyper, Wladimir A. Mardones Parra