Patents by Inventor Toshiteru Okada

Toshiteru Okada 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).

  • Method of making macroporous manganese dioxide
    Patent number: 4581219
    Abstract: A water purifier consisting essentially of manganese dioxide particles having a 20 to 48 mesh size and macroscopic pores which are so large in size as to permit passage of water therethrough. The particles may have active sites of needle-like or columnar crystals of manganese dioxide on the surfaces thereof. A method for making such water purifier is also described.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: April 8, 1986
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Nobuyuki Imada, Toshiteru Okada
  • Macroporous manganese dioxide water purifier
    Patent number: 4551254
    Abstract: A water purifier consisting essentially of manganese dioxide particles having a 20 to 48 mesh size and macroscopic pores which are so large in size as to permit passage of water therethrough. The particles may have active sites of needle-like or columnar crystals of manganese dioxide on the surfaces thereof. A method for making such water purifier is also described.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: November 5, 1985
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Nobuyuki Imada, Toshiteru Okada
  • Treatment of manganese nodules
    Patent number: 4548684
    Abstract: Valuable metals in manganese nodules have their solvent solubilities altered by forming an alkaline-manganese electric cell using manganese nodules as a cathode active material component and discharging the cell with a selected discharge load. Thus, the solvent extraction percentage for Mn in manganese nodules can be controlled to less than 60% and that for other valuable metals be elevated to at least 80% by selecting the discharge load properly.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: October 22, 1985
    Assignee: Mitsui Mining & Smelting Co. Ltd.
    Inventors: Kazuhide Miyazaki, Yasuo Kitamura, Toshiteru Okada