Patents by Inventor Kiyomi Ishii

Kiyomi Ishii 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 for manufacturing petroleum cokes and cracked oil from heavy petroleum oil
    Patent number: 5407560
    Abstract: A novel process is disclosed by which petroleum cokes and cracked oil can be produced by thermal cracking of a heavy petroleum oil to which a rare earth metal compound is added. The process produces petroleum cokes with an improved combustibility and promotes the yield of cracked oil at the same time.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: April 18, 1995
    Assignee: Japan Energy Corporation
    Inventors: Shintaro Miyawaki, Kiyomi Ishii, Mamoru Yamane
  • Fuel composition and fuel additive
    Patent number: 4968322
    Abstract: Disclosed herein are a fuel composition comprising a fuel oil added with at least two kinds of soaps selected from cerium, neodymium and lanthanum soaps and a fuel additive comprising an organic solution that contains at least two kinds of soaps selected from cerium, neodymium and lanthanum soaps.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: November 6, 1990
    Assignee: Nippon Mining Company, Limited
    Inventors: Shintaro Miyawaki, Kiyomi Ishii, Mamoru Yamane