Patents by Inventor Katsuyuki Yano

Katsuyuki Yano 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).

  • Process and apparatus for chemically removing ash from coal
    Patent number: 4424062
    Abstract: Finely divided ash-containing coal is immersed in an aqueous solution of hydrochloric acid or citric acid, and acidic ammonium fluoride to cause the ash to react with the acid and the acidic ammonium fluoride, and the deashed coal is thereafter separated from the solution.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: January 3, 1984
    Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.
    Inventors: Yasumi Kamino, Shigenori Onitsuka, Takanobu Watanabe, Katsuyuki Yano