Patents by Inventor Hidehiko Sugimura

Hidehiko Sugimura 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).

  • Patent number: 4243488
    Abstract: Metallurgical coke is made from coking a blend of coal which is comprised of reformed coal and another suitable coking coal. Reformed coal hereof is preferably made by the method which comprises dissolving at least one component selected from the group consisting of bituminous coal, subbituminous coal, brown coal and lignite in a hydrocarbon solvent, and recovering a reformed coal from said solution.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: January 6, 1981
    Assignee: Mitsui Coke Co., Ltd.
    Inventors: Hidehiko Sugimura, Keichiro Koba
  • Patent number: 4111786
    Abstract: Process for manufacturing reformed coal which comprises the steps of (a) dispersing coal into a mixed oil which is comprised of a coal oil having a boiling point between about 150.degree. C. and 500.degree. C. and a petroleum oil having a boiling point higher than that of kerosene; (b) subjecting the coal and oil dispersion to hydrogenation conditions sufficient to depolymerize the coal; (c) separating a substantially liquified coal solution from the product of hydrogenation, and (d) distilling the liquified coal solution to recover a reformed coal. Preferably, a portion of the coal oil is recycled from the distillation stage and a portion of the hydrogen needed for hydrogenation is produced from light fractions from the distillation stage.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: September 5, 1978
    Assignee: Mitsui Coke Co., Ltd.
    Inventors: Hidehiko Sugimura, Hisashi Murakami, Toshikatsu Ohtsubo, Kenji Fukuda