Patents by Inventor Tatsuya Mitsuma

Tatsuya Mitsuma 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 removing chalcophile elements from aqueous solutions by electrolysis
    Patent number: 4190508
    Abstract: An aqueous solution containing ions of one or more chalcophile elements is used as a catholyte and electrolyzed in the presence of elemental sulfur powder suspended therein to precipitate the chalcophile elements in the form of sulfide. The precipitated sulfide is then separated from the aqueous layer.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: February 26, 1980
    Assignee: National Research Institute for Metals
    Inventors: Hiroshi Kametani, Tatsuya Mitsuma