Patents by Inventor Hirotoshi Miyazima

Hirotoshi Miyazima 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).

  • Grease composition and rolling apparatus
    Patent number: 6919301
    Abstract: A grease composition with a thickener of a calcium sulfonate complex and a second thickener component in a base oil. The second thickener component may be, for instance, polyurea, a metallic soap, a complex metallic soap or an N-substituted terephthalamic acid metal salt. Alternatively, a grease composition with a thickener of an N-substituted terephthalamic acid metal salt and a second thickener component in a base oil. Furthermore, a grease composition with a thickener component of polyurea and complex metallic soap in an ester oil. Still further, a grease composition with a thickener of polyurea and a complex metallic soap in a base oil.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: July 19, 2005
    Assignee: NSK Ltd.
    Inventors: Shinya Nakatani, Hirotoshi Miyazima, Michita Hokao
  • Grease composition and rolling apparatus
    Publication number: 20030176298
    Abstract: A grease composition is produced by mixing a thickener of a calcium sulfonate complex and a second thickener component (polyurea, a metallic soap, a complex metallic soap or an N-substituted terephthalamic acid metal salt) into a base oil. This grease composition is excellent in heat resistance, load carrying capacity, water resistance and lubricating life.
    Type: Application
    Filed: October 15, 2002
    Publication date: September 18, 2003
    Applicant: NSK Ltd.
    Inventors: Shinya Nakatani, Hirotoshi Miyazima, Michita Hokao