Patents by Inventor Yoko Miyashiro

Yoko Miyashiro 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 for stabilizing acidic aqueous hydrogen peroxide solution containing copper
    Patent number: 5211927
    Abstract: An acidic aqueous hydrogen peroxide solution containing copper can be stabilized by adding an amino acid having the formula ##STR1## wherein Ar is an aromatic group.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: May 18, 1993
    Assignee: Tokai Denka Kogyo Kabushiki Kaisha
    Inventors: Katsutoshi Itani, Yoko Miyashiro