Patents by Inventor Hidefumi Tochigi

Hidefumi Tochigi 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).

  • Frost-preventive composition
    Patent number: 7744686
    Abstract: The invention provides a frost-preventive composition which strongly defrosts and melts ice and which prevents frosting for a long period of time and which does not run or sag when applied to a wall surface or the like.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: June 29, 2010
    Assignees: NOF Corporation, Chuo Yuka Co., Ltd.
    Inventors: Hidefumi Tochigi, Daijiro Shiino, Kosuke Tsuda, Akinori Itoh, Hiroshi Mori, Masaaki Kume
  • Frost-preventive composition
    Publication number: 20090085003
    Abstract: The invention provides a frost-preventive composition which strongly defrosts and melts ice and which prevents frosting for a long period of time and which does not run or sag when applied to a wall surface or the like.
    Type: Application
    Filed: March 28, 2006
    Publication date: April 2, 2009
    Inventors: Hidefumi Tochigi, Daijiro Shiino, Kosuke Tsuda, Akinori Itoh, Hiroshi Mori, Masaaki Kume
  • Viscosity index improver, process for preparing the same and lubricating oil composition
    Patent number: 6127325
    Abstract: A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a peroxide bond with a (meth)acrylate or the like or a copolymer (c) of a monomer having a peroxide bond with 2-hydroxyethyl(meth)acrylate or the like. The improver is excellent in the effect of improving the viscosity index, the thickening effect, the fluidity at low temperatures and the shear stability, and has no fear of causing phase separation in lubricating oil.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: October 3, 2000
    Assignee: NOF Corporation
    Inventors: Shuji Suyama, Yoshiki Higuchi, Hidefumi Tochigi, Hiroshi Ohmura