Patents by Inventor Yoichi Tsukiyama

Yoichi Tsukiyama 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).

  • Color-recovering agent
    Patent number: 7003834
    Abstract: This invention provides a composition and a means being capable of easily recovering the color of faded clothes in home. The composition is a color recovering agent which comprises (a) a water-insoluble polymer with a refractive index of 1.20 to 1.45 at 25° C., (b) a compound or polymer having a molecular weight of 300 to 1,000 having specific groups such as amide group, (c) water and (d) a non-aqueous solvent, wherein the ratio of (a)/(b) by weight is in the range of 3/1 to 100/1.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 28, 2006
    Assignee: Kao Corporation
    Inventors: Isao Yamada, Norihiro Inoue, Yoichi Tsukiyama
  • Color-recovering agent
    Publication number: 20030141489
    Abstract: This invention provides a composition and a means being capable of easily recovering the color of faded clothes in home. The composition is a color recovering agent which comprises (a) a water-insoluble polymer with a refractive index of 1.20 to 1.45 at 25° C., (b) a compound or polymer having a molecular weight of 300 to 1,000 having specific groups such as amide group, (c) water and (d) a non-aqueous solvent, wherein the ratio of (a)/(b) by weight is in the range of 3/1 to 100/1.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 31, 2003
    Inventors: Isao Yamada, Norihiro Inoue, Yoichi Tsukiyama