Patents by Inventor Kazuo Umekage

Kazuo Umekage 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).

  • Pressure-sensitive adhesive emulsion composition and a kraft tape using it
    Patent number: 5059479
    Abstract: A pressure-sensitive adhesive emulsion composition, characterized in that it is a pressure-sensitive adhesive emulsion composition containing the ingredients (A) and (B) below; the content of ingredient (B) is set at 1-70 solid parts per 100 solid parts by weight of the emulsion composition.(A) A polymer derived from at least one compound selected from a group including alkyl acrylates, alkyl methacrylates, and vinyl compounds, and having a glass transition temperature in the range of -60.degree. C. to -30.degree. C.(B) A bituminous emulsifier with an average particle diameter of the emulsified particles of 0.5-3.0 .mu.m.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: October 22, 1991
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Hajime Yuyama, Fumio Maekawa, Kazuo Umekage