Patents by Inventor Masahiko Otuka

Masahiko Otuka 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).

  • Aqueous dispersion composition containing microcrystalline cellulose and composition using the same
    Patent number: 5767176
    Abstract: An aqueous dispersion composition having excellent properties as a basic composition of a paper coating for improving printability, a paper strengthening agent, a cement compounding additive, a paint, an adhesive, etc., and a coating composition, a pulp composition and a mortar composition each containing the aqueous dispersion composition. The aqueous dispersion composition comprises an epoxy resin aqueous dispersion consisting of 100 parts by weight of an epoxy resin, 0.1 to 5.0 parts by weight of microcrystalline cellulose, and 0.1 to 10 parts by weight of a surface active agent; and a water-insoluble polyamine type curing agent. Use of the aqueous dispersion composition provides a coating composition, a pulp composition and a mortar composition each having excellent handling properties with respect to adhesion and viscosity, and excellent stability after curing even under a high temperature and high humid condition or a low temperature and low humid condition.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: June 16, 1998
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Masuhiko Nakanishi, Masahiko Otuka, Isao Takagi