Patents by Inventor Yoshihiro Sakasita

Yoshihiro Sakasita 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).

  • Coloring methods for aluminum and aluminum alloys
    Patent number: 4024039
    Abstract: A method for coloring aluminum and aluminum alloys comprising passing an alternating current from the article of aluminum or aluminum alloys having an oxidized film thereon through an aqueous solution of one or more salts of one or more metals of Group VIII of the periodic table, and thereafter passing a direct current through an aqueous solution of electrolyte utilizing the aluminum material as the anode wherein said solution may have a conductivity of more than 10 .mu..OMEGA..sup.-.sup.1 cm.sup.-.sup.1, be the same as the one used when employing the alternating current or contain a water-soluble resin. The electrolyte is free of added acid.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: May 17, 1977
    Assignee: Honny Chemicals Company, Ltd.
    Inventors: Shoji Yoshida, Yoshizo Ito, Yoshihiro Sakasita, Tatsuhiko Kobata