Patents by Inventor Futao Sakata

Futao Sakata 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).

  • Treatment of water-containing coal
    Patent number: 4309192
    Abstract: Disclosed is a process for the treatment of water-containing coal which comprises mixing the water-containing coal with a hydrocarbon oil having a specific gravity higher than that of water at temperatures in the range of 100.degree. to 350.degree. C.; heating the resulting mixture at a temperature in the range of 100.degree. to 350.degree. C. and a pressure not lower than the saturated vapor pressure of water at that temperature; and then allowing the heated mixture to settle at a temperature in the range of 100.degree. to 350.degree. C. and a pressure not lower than the saturated vapor pressure of water at that temperature, whereby an upper layer consisting of the water separated from the water-containing coal is formed on a lower layer consisting of the mixture of the dehydrated coal and the hydrocarbon oil.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: January 5, 1982
    Assignees: Mitsui Mining Co. Ltd., Mitsui Coke Co. Ltd.
    Inventors: Isao Kubo, Shigemi Nagayoshi, Futao Sakata, Tetsuo Wada, Shoichi Oi