Patents by Inventor Kineo Yamaguchi

Kineo Yamaguchi 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 softening caked catalyst
    Patent number: 4155875
    Abstract: A method of softening or loosening caked catalyst pellets used for the desulfurization of a residual oil regardless of the sizes and shapes of the catalyst pellets and without the need of mechanically crushing the caked catalyst comprising contacting the caked catalyst with a washing oil containing an organic amine and/or ammonia gas absorbed therein.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: May 22, 1979
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Kineo Yamaguchi, Katsuhiko Kawakami, Yukimasa Nakamoto
  • Method for the prevention of stress corrosion cracking
    Patent number: 4135013
    Abstract: Equipment used in a substantially water free, but corrosive environment is protected from corrosion by coating only certain welded parts thereof with a metal more base than the metal part coated.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: January 16, 1979
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Kineo Yamaguchi, Katsuhiko Kawakami
  • Method for treating catalyst used for catalytic reactions of hydrocarbons at the time of catalyst removal
    Patent number: 4031031
    Abstract: A method of removing a catalyst used for catalytic reactions of hydrocarbons from a reaction system for exchange or otherwise comprising treating the catalyst with water or a mineral oil in the presence of a surface active substance or both a surface active substance and a chelating agent to wet the catalyst. This method ensures a safe and simple removal of the catalyst without involving dust scattering, spontaneous combustion or generation of sulfur dioxide gas.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: June 21, 1977
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Kineo Yamaguchi, Katsuhiko Kawakami, Yukimasa Nakamoto