Patents by Inventor Tokio Yanagida

Tokio Yanagida 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).

  • Treatment of anode slime from copper electrolysis
    Patent number: 3944414
    Abstract: Process for the flotation of anode slime from copper electrolysis comprising subjecting the anode slime, as a preliminary treatment, to attrition treatment in combination with a copper leaching treatment in a medium of an acid solution. The floated material obtained from the flotation is continuously subjected to three processes of roasting, melting and cupellation in a rotary furnace lined with refractory bricks for recovery of good quality silver anode.
    Type: Grant
    Filed: October 1, 1974
    Date of Patent: March 16, 1976
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Tokio Yanagida, Ariyoshi Saito, Naoyuki Hosoda, Fukuzo Kaneko