Patents by Inventor Sei Tsutsui

Sei Tsutsui 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).

  • Patent number: 9918920
    Abstract: The present invention relates to a dentifrice composition which removes a fine stain and a stain adhering to the surface of teeth sufficiently, enhances the whitening effect on teeth and the gloss-imparting effect on teeth, also increases the amount of fluorine adsorption to teeth, and decreases the feeling of astringency. The oral composition of the present invention comprises the following component (A): phytic acid or an alkali metal salt thereof in an amount of 0.04% by mass or more and 1% by mass or less in terms of phytic acid; and component (B): monofluorophosphoric acid or an alkali metal salt thereof in an amount of 500 ppm or more and 1500 ppm or less in terms of fluorine atoms, wherein a mass ratio of the component (A) to the component (B), ((A)/(B)), is 0.1 or more and 1.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 20, 2018
    Assignee: KAO CORPORATION
    Inventors: Sei Tsutsui, Atsushi Yamagishi, Yoshiyuki Eshita
  • Publication number: 20170196794
    Abstract: The present invention relates to a dentifrice composition which removes a fine stain and a stain adhering to the surface of teeth sufficiently, enhances the whitening effect on teeth and the gloss-imparting effect on teeth, also increases the amount of fluorine adsorption to teeth, and decreases the feeling of astringency. The oral composition of the present invention comprises the following component (A): phytic acid or an alkali metal salt thereof in an amount of 0.04% by mass or more and 1% by mass or less in terms of phytic acid; and component (B): monofluorophosphoric acid or an alkali metal salt thereof in an amount of 500 ppm or more and 1500 ppm or less in terms of fluorine atoms, wherein a mass ratio of the component (A) to the component (B), ((A)/(B)), is 0.1 or more and 1.
    Type: Application
    Filed: June 5, 2015
    Publication date: July 13, 2017
    Applicant: Kao Corporation
    Inventors: Sei TSUTSUI, Atsushi YAMAGISHI, Yoshiyuki ESHITA
  • Patent number: 9301906
    Abstract: Provided is a dentifrice composition which has excellent dental caries preventive effect by improving the uptake of fluoride ions into tooth enamel or dentin and improving acid resistance. A dentifrice composition comprising the following components (A), (B), (C) and (D): (A) from 0.002 to 5% by mass of a fluoride ion supplying compound in terms of fluorine, (B) from 25 to 65% by mass of a sugar alcohol, which is dissolved in an amount of 5 to 30 g in 100 g of an aqueous solution at 20° C., (C) from 10 to 25% by mass of water, and (D) from 0.1 to 1.2% by mass of a binder, wherein the mass ratio of the component (B) to the component (C), the mass ratio (B/C), is more than 1 and 6 or less.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: April 5, 2016
    Assignee: Kao Corporation
    Inventors: Atsushi Yamagishi, Sei Tsutsui
  • Publication number: 20140017179
    Abstract: Provided is a dentifrice composition which has excellent dental caries preventive effect by improving the uptake of fluoride ions into tooth enamel or dentin and improving acid resistance. A dentifrice composition comprising the following components (A), (B), (C) and (D): (A) from 0.002 to 5% by mass of a fluoride ion supplying compound in terms of fluorine, (B) from 25 to 65% by mass of a sugar alcohol, which is dissolved in an amount of 5 to 30 g in 100 g of an aqueous solution at 20° C., (C) from 10 to 25% by mass of water, and (D) from 0.1 to 1.2% by mass of a binder, wherein the mass ratio of the component (B) to the component (C), the mass ratio (B/C), is more than 1 and 6 or less.
    Type: Application
    Filed: April 6, 2011
    Publication date: January 16, 2014
    Applicant: Kao Corporation
    Inventors: Atsushi Yamagishi, Sei Tsutsui