Patents by Inventor Futoshi Sakaguchi

Futoshi Sakaguchi 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 producing middle distillate products by two-stage hydrocracking and hydrocracking apparatus
    Patent number: 6576119
    Abstract: The two-stage hydrocracking process of the present invention comprises bringing the first-stage feed oil containing a hydrocarbon component and having a boiling point of 316° C. or higher into contact with the first-stage catalyst in the presence of hydrogen to obtain a first-stage product; separating the first-stage product into heavy component and light component containing the middle distillate products; bringing the second-stage feed oil containing heavy component of the first-stage reaction product into contact with the second-stage catalyst in the presence of hydrogen to obtain the second-stage product; separating the second-stage product into heavy component and light component comprising middle distillate products and recycling part of the heavy component of the second-stage product to the second-stage feed oil. Hydrocracking activity of the first-stage catalyst is higher than hydrocracking activity of the second-stage catalyst.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: June 10, 2003
    Assignee: Japan Energy Corporation
    Inventors: Katsuaki Ishida, Manabu Kobayashi, Hiroki Koyama, Seiji Togawa, Futoshi Sakaguchi
  • Method of producing middle distillate products by two-stage hydrocracking and hydrocracking apparatus
    Publication number: 20020008051
    Abstract: The two-stage hydrocracking process of the present invention comprises bringing the first-stage feed oil containing a hydrocarbon component and having a boiling point of 316° C. or higher into contact with the first-stage catalyst in the presence of hydrogen to obtain a first-stage product; separating the first-stage product into heavy component and light component containing the middle distillate products; bringing the second-stage feed oil containing heavy component of the first-stage reaction product into contact with the second-stage catalyst in the presence of hydrogen to obtain the second-stage product; separating the second-stage product into heavy component and light component comprising middle distillate products and recycling part of the heavy component of the second-stage product to the second-stage feed oil. Hydrocracking activity of the first-stage catalyst is higher than hydrocracking activity of the second-stage catalyst.
    Type: Application
    Filed: February 28, 2001
    Publication date: January 24, 2002
    Inventors: Katsuaki Ishida, Manabu Kobayashi, Hiroki Koyama, Seiji Togawa, Futoshi Sakaguchi