Patents by Inventor Kiyoshi Teranishi

Kiyoshi Teranishi 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).

  • Polymer composition useful as viscosity index improver
    Patent number: 5026496
    Abstract: A polymer composition or concentrate comprising:(A) an olefinic copolymer,(B) a copolymer of an olefin with a (meth)acrylate,(C) a poly(meth)acrylate, and(D) a surfactant, which is poor solvent for both components (A) and (C), which acts as a solubilizer or phase-stabilizer for the components (A) and (C), and which in combination with component (B), which has surface active properties, functions as a phase-stabilizer. The composition has a relatively low viscosity even at high polymer contents and is useful as a lubricating oil additive which improves the viscosity index of a lubricating oil formulation.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: June 25, 1991
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Shoji Takigawa, Kiyoshi Teranishi, Tomio Nomura, Toshiro Suzuki, Kozo Sakai