Patents by Inventor Miduho Maeda

Miduho Maeda 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).

  • Block copolymers and composition containing the same
    Patent number: 4987194
    Abstract: A block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan .delta. at least 0.degree. C., and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated, and a composition consisting of the block copolymer. The composition can provide a vibration-damping material.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: January 22, 1991
    Assignee: Kuraray Company, Limited
    Inventors: Miduho Maeda, Hideo Takamatsu, Masao Ishii, Shobu Minatono