Patents by Inventor Yuuta Tsumura

Yuuta Tsumura 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: 11124420
    Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: September 21, 2021
    Assignee: TOMITA PHARMACEUTICAL CO., LTD.
    Inventors: Yuuta Tsumura, Kazuki Kamai, Yukinori Konishi, Kazuhiko Tamagawa
  • Patent number: 10517825
    Abstract: Provided is a powder composition containing an oily substance, the powder composition having good oxidation stability and excellent compression moldability. The powder composition containing an oily substance contains a powdery calcium silicate-based material, and an oily substance impregnated into the material. In the material, a cumulative pore volume for a pore size of 10 to 70 nm is 1.1 cc/g or more, and a cumulative pore volume for a pore size of 70 to 500 nm is 2.0 cc/g or less.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: December 31, 2019
    Assignee: TOMITA PHARMACEUTICAL CO., LTD.
    Inventors: Takanori Taniwaki, Kazuki Kamai, Yuuta Tsumura, Daichi Masaki
  • Patent number: 10292913
    Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: May 21, 2019
    Assignee: TOMITA PHARMACEUTICAL CO., LTD.
    Inventors: Yuka Okada, Kazuki Kamai, Yuuta Tsumura, Yukinori Konishi
  • Publication number: 20180153809
    Abstract: Provided is a powder composition containing an oily substance, the powder composition having good oxidation stability and excellent compression moldability. The powder composition containing an oily substance contains a powdery calcium silicate-based material, and an oily substance impregnated into the material. In the material, a cumulative pore volume for a pore size of 10 to 70 nm is 1.1 cc/g or more, and a cumulative pore volume for a pore size of 70 to 500 nm is 2.0 cc/g or less.
    Type: Application
    Filed: May 27, 2016
    Publication date: June 7, 2018
    Inventors: TAKANORI TANIWAKI, KAZUKI KAMAI, YUUTA TSUMURA, DAICHI MASAKI
  • Publication number: 20170112735
    Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.
    Type: Application
    Filed: March 26, 2015
    Publication date: April 27, 2017
    Inventors: Yuka Okada, Kazuki Kamai, Yuuta Tsumura, Yukinori Konishi
  • Publication number: 20160289081
    Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.
    Type: Application
    Filed: November 7, 2014
    Publication date: October 6, 2016
    Inventors: Yuuta Tsumura, Kazuki Kamai, Yukinori Konishi, Kazuhiko Tamagawa