Patents by Inventor Hirokazu Kawashimo

Hirokazu Kawashimo 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).

  • Stabilized fuel oil containing a dispersant
    Patent number: 4746328
    Abstract: A residual fuel oil is improved in dispersion stability when a large amount of sludge is contained therein and comprises (1) a thermal cracking oil, (2) a diluent and (3) a dispersant selected from the group consisting of (A) an imidazoline derivative containing a hydrocarbon group having 7 to 23 carbon atoms, (B) a hydrolysis product of (A), (C) a reaction product of an aliphatic acid having 8 to 22 carbon atoms and a polyalkylenepolyamine having 4 to 6 amino groups, (D) a monoamine containing a hydrocarbon group having 8 to 22 carbon atoms, (E) a polyamine containing a hydrocarbon group having 8 to 22 carbon atoms, (F) an etheramine having a long chain hydrocarbon group, (G) a phosphate having a long chain hydrocarbon group, (H) a salt of (G), (I) a dithiophosphate and (J) a salt of (I).
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: May 24, 1988
    Assignees: Kao Corporation, Karonite Chemical Co., Ltd.
    Inventors: Naoyuki Sakamoto, Hirokazu Kawashimo, Koji Kishimoto, Takayuki Ikenaga, Yoshihide Watanabe, Shigemi Hayashi