Patents by Inventor Tetsuro ITAGAKI

Tetsuro ITAGAKI 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: 11141363
    Abstract: In an ultraviolet-shielding particle coated with silicon oxide of the present invention, a surface of the ultraviolet-shielding particle is coated with a silicon oxide coat, at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, and a cycloalkyl group is present on a surface of the silicon oxide coat, and a content of the functional group is 0.0001% by mass or more and 0.30% by mass or less.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: October 12, 2021
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro Itagaki, Hirokazu Matsushita, Norito Morishita
  • Publication number: 20210061669
    Abstract: The titanium oxide powder of the present invention is a titanium oxide powder which has a BET specific surface area of 5 m2/g or more and 15 m2/g or less, and contains octahedral-shaped particles, wherein each octahedral-shaped particle thereof has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or higher and 1000 nm or lower, and a value (D90/D10) is 1 or higher and 3 or lower, wherein the value is obtained by dividing a value (D90), which corresponds to 90% in a cumulative number percentage of the maximum values of line segments each of which connects two apexes which face each other, by a value (D10) which corresponds to 10% in the cumulative number percentage.
    Type: Application
    Filed: December 27, 2018
    Publication date: March 4, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Teppei YAKUBO, Naoko ITO, Tetsuro ITAGAKI
  • Publication number: 20200360250
    Abstract: The titanium oxide powder of the present invention is a titanium oxide powder having a BET specific surface area of 5 m2/g or more and 15 m2/g or less and containing polyhedral-shaped titanium oxide particles having eight or more faces, in which an L value in Lab color space thereof is 75 or higher.
    Type: Application
    Filed: December 27, 2018
    Publication date: November 19, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tsutomu NOZOE, Teppei YAKUBO, Tetsuro ITAGAKI
  • Publication number: 20200325034
    Abstract: A titanium oxide powder of the present invention has a BET specific surface area of 5 m2/g or more and 15 m2/g or less and contains polyhedral-shaped titanium oxide particles having eight or more faces, in which a mass reduction rate in a case of being heated at 800° C. for 1 hour in an air atmosphere is 0.03% by mass or more and 0.5% by mass or less.
    Type: Application
    Filed: December 27, 2018
    Publication date: October 15, 2020
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Teppei YAKUBO, Tsutomu NOZOE, Tetsuro ITAGAKI
  • Patent number: 10717658
    Abstract: Titanium oxide particles of the present invention include octahedral-shaped particles, in which each particle of the octahedral-shaped particles has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or more and 1,000 nm or less, and a value (the average value of the maximum values/BET-converted average particle diameter) obtained by dividing the average value of the maximum values of the line segments by an average particle diameter converted from a BET specific surface area is 1.0 or more and 2.5 or less.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 21, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Teppei Yakubo, Tetsuro Itagaki
  • Publication number: 20190350822
    Abstract: In an ultraviolet-shielding particle coated with silicon oxide of the present invention, a surface of the ultraviolet-shielding particle is coated with a silicon oxide coat, at least one functional group selected from the group consisting of an alkyl group, an alkenyl group, and a cycloalkyl group is present on a surface of the silicon oxide coat, and a content of the functional group is 0.0001% by mass or more and 0.30% by mass or less.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 21, 2019
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro ITAGAKI, Hirokazu MATSUSHITA, Norito MORISHITA
  • Patent number: 10363204
    Abstract: Zinc oxide coated with silicon oxide of the present invention is zinc oxide which is coated with silicon oxide wherein surfaces of zinc oxide particles are coated with silicon oxide coatings, and the coated zinc oxide particles comprises at least one element selected from a group consisting of Mg, Ca, and Ba.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: July 30, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro Itagaki, Syunsuke Suma, Gaku Fujihashi
  • Publication number: 20190161360
    Abstract: Titanium oxide particles of the present invention include octahedral-shaped particles, in which each particle of the octahedral-shaped particles has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or more and 1,000 nm or less, and a value (the average value of the maximum values/BET-converted average particle diameter) obtained by dividing the average value of the maximum values of the line segments by an average particle diameter converted from a BET specific surface area is 1.0 or more and 2.5 or less.
    Type: Application
    Filed: June 28, 2017
    Publication date: May 30, 2019
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Teppei YAKUBO, Tetsuro ITAGAKI
  • Patent number: 10238589
    Abstract: Provided are a silicon oxide-coated zinc oxide, a method for producing the same, a composition and a cosmetic including a silicon oxide-coated zinc oxide. The silicon oxide-coated zinc oxide is a silicon oxide-coated zinc oxide formed by coating surfaces of zinc oxide particles with a silicon oxide coat, in which an average particle diameter of the zinc oxide particles is in a range of more than 50 nm and 500 nm or less, and, when an abundance ratio of silicon in the silicon oxide coat in a Q3 environment is indicated by Q3, and an abundance ratio in a Q4 environment is indicated by Q4, Q3+Q4?0.6 and Q4/(Q3+Q4)?0.5 are satisfied.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro Itagaki, Gaku Fujihashi, Syunsuke Suma
  • Publication number: 20180289600
    Abstract: The present invention provides silicon oxide-coated zinc oxide in which, in a silica coating formed of a silicate alkali metal salt, the elution of zinc ions is suppressed, a method for preparing the same, a composition containing silicon oxide-coated zinc oxide, and a cosmetic material. The silicon oxide-coated zinc oxide of the present invention is silicon oxide-coated zinc oxide formed by coating surfaces of zinc oxide particles with a silicon oxide coating, in which an average primary particle diameter of the zinc oxide particles is more than 50 nm and 500 nm or less, and when held in a buffer solution having a pH of 5 for 1 hour, an elution ratio S of the zinc oxide defined by following Expression (1) is 50% or less.
    Type: Application
    Filed: November 11, 2015
    Publication date: October 11, 2018
    Inventors: Syunsuke SUMA, Tetsuro ITAGAKI, Hirokazu MATSUSHITA
  • Publication number: 20180161255
    Abstract: Provided is silicon oxide-coated zinc oxide, which can inhibit a decrease in viscosity resulting from a carbomer in a case where the silicon oxide-coated zinc oxide is used in water-based materials, a composition containing silicon oxide-coated zinc oxide, and a cosmetic product. The silicon oxide-coated zinc oxide of the present invention contains zinc oxide particles and a silicon oxide coating on a surface of the zinc oxide particles, in which an electric conductivity of a water suspension of the silicon oxide-coated zinc oxide is 120 ?S/cm or less.
    Type: Application
    Filed: February 24, 2016
    Publication date: June 14, 2018
    Inventors: Syunsuke SUMA, Tetsuro ITAGAKI, Gaku FUJIHASHI, Hirokazu MATSUSHITA
  • Patent number: 9855197
    Abstract: Zinc oxide coated with silicon oxide of the present invention is zinc oxide which is coated with silicon oxide wherein surfaces of zinc oxide particles are coated with silicon oxide coatings, and the coated zinc oxide particles comprises at least one element selected from a group consisting of Mg, Ca, and Ba.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: January 2, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro Itagaki, Syunsuke Suma, Gaku Fujihashi
  • Publication number: 20170266084
    Abstract: Zinc oxide coated with silicon oxide of the present invention is zinc oxide which is coated with silicon oxide wherein surfaces of zinc oxide particles are coated with silicon oxide coatings, and the coated zinc oxide particles comprises at least one element selected from a group consisting of Mg, Ca, and Ba.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Inventors: Tetsuro ITAGAKI, Syunsuke SUMA, Gaku FUJIHASHI
  • Patent number: 9642785
    Abstract: Provided are a silicon-oxide-coated zinc oxide capable of suppressing the elution of zinc ions from zinc oxide particles, a method for manufacturing the same, a silicon-oxide-coated-zinc-oxide-containing composition, and a cosmetic. The silicon-oxide-coated zinc oxide is a silicon-oxide-coated zinc oxide formed by coating the surfaces of zinc oxide particles with a silicon oxide coating, in which the average particle diameter of the zinc oxide particles is in a range of 1 nm or more and 50 nm or less, when the abundance ratio of silicon in the silicon oxide coating in a Q3 environment is indicated by Q3, and the abundance ratio in a Q4 environment is indicated by Q4, Q3+Q4?0.6 and Q4/(Q3+Q4)?0.5, and furthermore, the decomposition ratio of Brilliant Blue generated by the photocatalytic activity of the zinc oxide particles is 3% or less.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: May 9, 2017
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Tetsuro Itagaki, Yoshiki Kusahara, Gaku Fujihashi, Syunsuke Suma
  • Publication number: 20170095407
    Abstract: Provided are a silicon oxide-coated zinc oxide, a method for producing the same, a composition and a cosmetic including a silicon oxide-coated zinc oxide. The silicon oxide-coated zinc oxide is a silicon oxide-coated zinc oxide formed by coating surfaces of zinc oxide particles with a silicon oxide coat, in which an average particle diameter of the zinc oxide particles is in a range of more than 50 nm and 500 nm or less, and, when an abundance ratio of silicon in the silicon oxide coat in a Q3 environment is indicated by Q3, and an abundance ratio in a Q4 environment is indicated by Q4, Q3+Q4?0.6 and Q4/(Q3+Q4)?0.5 are satisfied.
    Type: Application
    Filed: March 30, 2015
    Publication date: April 6, 2017
    Inventors: Tetsuro ITAGAKI, Gaku FUJIHASHI, Syunsuke SUMA
  • Publication number: 20160287488
    Abstract: Zinc oxide coated with silicon oxide of the present invention is zinc oxide which is coated with silicon oxide wherein surfaces of zinc oxide particles are coated with silicon oxide coatings, and the coated zinc oxide particles comprises at least one element selected from a group consisting of Mg, Ca, and Ba.
    Type: Application
    Filed: November 13, 2014
    Publication date: October 6, 2016
    Inventors: Tetsuro ITAGAKI, Syunsuke SUMA, Gaku FUJIHASHI
  • Publication number: 20160221835
    Abstract: Zinc oxide powder of the present invention has a specific surface area which is in a range of 1.5 m2/g to 65 m2/g, a conductivity which is 150 ?S/cm or less and a bulk specific volume which is in a range of 0.5 mL/g to 10 mL/g.
    Type: Application
    Filed: July 28, 2015
    Publication date: August 4, 2016
    Inventors: Tadashi Neya, Tetsuro Itagaki, Syunsuke Suma
  • Patent number: 9403691
    Abstract: Zinc oxide powder of the present invention has a specific surface area which is in a range of 1.5 m2/g to 65 m2/g, a conductivity which is 150 ?S/cm or less and a bulk specific volume which is in a range of 0.5 mL/g to 10 mL/g.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: August 2, 2016
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Tadashi Neya, Tetsuro Itagaki, Syunsuke Suma
  • Publication number: 20160045411
    Abstract: Provided are a silicon-oxide-coated zinc oxide capable of suppressing the elution of zinc ions from zinc oxide particles, a method for manufacturing the same, a silicon-oxide-coated-zinc-oxide-containing composition, and a cosmetic. The silicon-oxide-coated zinc oxide is a silicon-oxide-coated zinc oxide formed by coating the surfaces of zinc oxide particles with a silicon oxide coating, in which the average particle diameter of the zinc oxide particles is in a range of 1 nm or more and 50 nm or less, when the abundance ratio of silicon in the silicon oxide coating in a Q3 environment is indicated by Q3, and the abundance ratio in a Q4 environment is indicated by Q4, Q3+Q4?0.6 and Q4/(Q3+Q4)?0.5, and furthermore, the decomposition ratio of Brilliant Blue generated by the photocatalytic activity of the zinc oxide particles is 3% or less.
    Type: Application
    Filed: March 31, 2014
    Publication date: February 18, 2016
    Inventors: Tetsuro ITAGAKI, Yoshiki KUSAHARA, Gaku FUJIHASHI, Syunsuke SUMA