Patents by Inventor Satoshi Hyuga

Satoshi Hyuga 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).

  • Paper sizing composition
    Patent number: 5438087
    Abstract: The present invention provides a paper sizing composition comprising a rosin material and cationic acrylamide and/or methacrylamide polymers having hydrophobic groups wherein said rosin material is directly emulsified in water with said polymers. The sizing composition has an improved storage stability and exhibits an excellent sizing performance in the acidic through neutral pH range.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: August 1, 1995
    Assignee: Japan PMC Corporation
    Inventors: Tsuyoshi Ikeda, Kiyoshi Iwai, Koji Ohta, Satoshi Hyuga, Masatoshi Hotta