Patents by Inventor Jouko Peräaho

Jouko Peräaho 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).

  • Impeller for mixing slurry in metallurgical processes
    Patent number: 9138698
    Abstract: The invention relates to a turbine-type high-power impeller, to be used for mixing slurry in hydrometallurgical process reactors. The impeller is formed of at least five blades, each of which blades comprises a front edge, trailing edge, root and tip; the roots of the impeller blades are permanently attached by a joint to the hub or axis of the impeller, so that the front edge of the impeller blade is straight, and the trailing edge is chamfered, in which case the blade is narrowed towards the tip, and the blade is provided with two longitudinal folds arranged in parallel with the front edge of the blade.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: September 22, 2015
    Assignee: OUTOTEC OYJ
    Inventors: Launo Lilja, Jari Tiihonen, Bror Nyman, Tuomas Hirsi, Jussi Vaarno, Jouko Peräaho
  • IMPELLER FOR MIXING SLURRY IN METALLURGICAL PROCESSES
    Publication number: 20120039721
    Abstract: The invention relates to a turbine-type high-power impeller, to be used for mixing slurry in hydrometallurgical process reactors. The impeller is formed of at least five blades, each of which blades comprises a front edge, trailing edge, root and tip; the roots of the impeller blades are permanently attached by a joint to the hub or axis of the impeller, so that the front edge of the impeller blade is straight, and the trailing edge is chamfered, in which case the blade is narrowed towards the tip, and the blade is provided with two longitudinal folds arranged in parallel with the front edge of the blade.
    Type: Application
    Filed: March 1, 2010
    Publication date: February 16, 2012
    Applicant: OUTOTEC OYJ
    Inventors: Launo Lilja, Jari Tiihonen, Bror Nyman, Tuomas Hirsi, Jussi Vaarno, Jouko Peräaho