Patents by Inventor Sumiko Yamano

Sumiko Yamano 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).

  • Copper powder for electroconductive paints and electroconductive paint compositions
    Patent number: 5068150
    Abstract: A copper powder for electroconductive paints comprising copper particles and an organic zirconate compound which has been applied as a coating on the surfaces of said particles and an electroconductive paint composition obtained from the copper powder for electroconductive paints. The organic zirconate compounds used in the present invention are an organic zirconate compound (RO).sub.x --Zr--(OR').sub.4-x having an easily hydrolyzable organic group and an organic group which is hardly hydrolyzable and exhibits lipophilicity or a mixture of a zirconium acylate polymer and a higher carboxylic acid ester.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: November 26, 1991
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshinobu Nakamura, Kanetaro Sannohe, Yoshio Sohama, Toru Iwasaki, Sumiko Yamano