Patents by Inventor Mikko TYSTER

Mikko TYSTER 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).

  • Patent number: 10351930
    Abstract: The present invention according provides a method of recovering silver from silver containing halide solutions, comprising the steps of: (a) providing an ion exchange column comprising a weak anion exchange resin; (b) introducing the silver containing halide solution to the ion exchange column to absorb silver in the weak anion exchange resin; (c) washing the loaded ion exchange resin with a first washing solution to rinse off absorbed zinc and optionally at least part of copper; (d) washing the loaded ion exchange resin with a second washing solution to rinse off remaining copper; and (e) optionally washing the loaded ion exchange resin with a third washing solution to rinse off absorbed lead; and (f) eluting the loaded ion exchange resin with an eluent to remove silver from the resin and to obtain a silver containing solution.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: July 16, 2019
    Assignee: OUTOTEC (FINLAND) OY
    Inventors: Kari Valkama, Mika Haapalainen, Mikko Tyster, Sami Virolainen
  • Publication number: 20170175224
    Abstract: The present invention according provides a method of recovering silver from silver containing halide solutions, comprising the steps of: (a) providing an ion exchange column comprising a weak anion exchange resin; (b) introducing the silver containing halide solution to the ion exchange column to absorb silver in the weak anion exchange resin; (c) washing the loaded ion exchange resin with a first washing solution to rinse off absorbed zinc and optionally at least part of copper; (d) washing the loaded ion exchange resin with a second washing solution to rinse off remaining copper; and (e) optionally washing the loaded ion exchange resin with a third washing solution to rinse off absorbed lead; and (f) eluting the loaded ion exchange resin with an eluent to remove silver from the resin and to obtain a silver containing solution.
    Type: Application
    Filed: June 4, 2015
    Publication date: June 22, 2017
    Applicant: OUTOTEC (FINLAND) OY
    Inventors: Kari VALKAMA, Mika HAAPALAINEN, Mikko TYSTER, Sami VIROLAINEN