Patents by Inventor Ryosuke TOYOSHIMA

Ryosuke TOYOSHIMA 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).

  • Powder dispersant, and powder dispersion composition and cosmetic product containing the same
    Patent number: 10398638
    Abstract: A powder dispersant includes an ester compound of a polyglycerol having an average degree of polymerization of the polyglycerol, calculated from its hydroxyl value, in the range 2 to 20, a monovalent carboxylic acid or at least one derivative thereof, and a divalent carboxylic acid or at least one derivative thereof.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: September 3, 2019
    Assignee: SAKAMOTO YAKUHIN KOGYO CO., LTD.
    Inventors: Ryosuke Toyoshima, Takeshi Yamada
  • POWDER DISPERSANT, AND POWDER DISPERSION COMPOSITION AND COSMETIC PRODUCT CONTAINING THE SAME
    Publication number: 20170216187
    Abstract: A powder dispersant includes an ester compound of a polyglycerol having an average degree of polymerization of the polyglycerol, calculated from its hydroxyl value, in the range 2 to 20, a monovalent carboxylic acid or at least one derivative thereof, and a divalent carboxylic acid or at least one derivative thereof.
    Type: Application
    Filed: April 20, 2017
    Publication date: August 3, 2017
    Applicant: SAKAMOTO YAKUHIN KOGYO CO., LTD.
    Inventors: Ryosuke TOYOSHIMA, Takeshi YAMADA