Patents by Inventor Takashi Torihata

Takashi Torihata 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).

  • Method of removing mercury from hydrocarbon oils
    Patent number: 4986898
    Abstract: Trace amounts of mercury and its compounds present in hydrocarbon oil can be removed selectively and efficiently by bringing the hydrocarbon oils containing mercury and its compounds into contact with a certain treating agent after having heated such oils. Since the hydrocarbon oil from which mercury and its compounds have been removed does not contain catalyst poisons, such a hydrocarbon oil can be used extensively for catalytic reaction processes such as hydrogenation.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: January 22, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Takashi Torihata, Satoyuki Nisimura
  • Method of removing mercury from hydrocarbon oils
    Patent number: 4946582
    Abstract: A method of selective and efficient removal of mercury from a hydrocarbon oil comprising contacting said oil with a cupric and/or stannous compound forming a reaction system. The purified hydrocarbon oil can be readily separated from the reaction system. The purified hydrocarbon oil does not contain mercury or any other catalyst poisoning component and can, therefore, be used extensively in catalytic reactions typified by hydrogenation reaction.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: August 7, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Takashi Torihata, Etsuko Kawashima