Patents by Inventor Yoshiteru Yamasaki

Yoshiteru Yamasaki 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).

  • Carbon black, method for its preparation and its applications
    Patent number: 6403697
    Abstract: Carbon black having boron solid-solubilized therein, which has an electrical resistivity of not higher than 0.1 &OHgr;cm, as measured in accordance with JIS K1469.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: June 11, 2002
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toshikatsu Mitsunaga, Yoshiteru Yamasaki, Hiroyuki Hara, Kazuyoshi Tsuruta