Patents by Inventor Masaki Tumadori

Masaki Tumadori 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).

  • Shade enhancing agent
    Patent number: 5126392
    Abstract: A shade enhancing agent comprises an aqueous resin emulsion composition obtained by polymerizing a monomer in the presence of a cationic surfactant or a cationic protective colloid, polymerizing a monomer and adding a cationic protective colloid or polymerizing a monomer in the presence of a cationic or nonionic emulsifying dispersant so as to have a cationic group in the molecule, a dry film of said composition having a glass transition point (Tg) in the range between 20.degree. C. and 110.degree. C. and a refractive index of 1.50 or less, said emulsion composition having a zeta potential in the range between +5 and +80 mV at an ion strength of 10.sup.-3 and a pH value of 7.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: June 30, 1992
    Assignee: Kao Corporation
    Inventors: Norihiko Nakashima, Yoshinobu Ishikawa, Akihiro Kondo, Masaki Tumadori