Patents by Inventor Fumiko Kamifuji

Fumiko Kamifuji 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 composition, process for the preparation thereof and pressure-sensitive adhesive sheets
    Patent number: 6432475
    Abstract: A pressure-sensitive adhesive composition having well-balanced pressure-sensitive adhesive force and cohesive force without causing any safety or economy problems, a process for the preparation of the same and pressure-sensitive adhesive sheets using the same are disclosed. The pressure-sensitive adhesive composition comprises a crosslinked polymer obtained by crosslinking a block copolymer comprising at least two of a styrene-based polymer block A and an acrylic polymer block B having a structural unit represented by the general formula (1):—[CH2═C(R1)COOR2]— wherein R1 represents a hydrogen atom or methyl group, and R2 represents a C2-14 alkyl group, bonded each other, such as A-B or B-A type block copolymer and A-B-A type block copolymer.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: August 13, 2002
    Assignee: Nitto Denko Corporation
    Inventors: Michiharu Yamamoto, Yutaka Moroishi, Kenichi Okada, Fumiko Kamifuji, Tomoko Doi