Patents by Inventor Kazuhiko TSUCHIOKA

Kazuhiko TSUCHIOKA 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).

  • Chemical reaction device and particle production method using chemical reaction device
    Patent number: 11305243
    Abstract: A chemical reaction device that supplies a raw material liquid into a solution and causes particles to precipitate in the solution is provided. The chemical reaction device includes an agitation tank configured to accommodate the solution, an impeller configured to agitate the solution, and a plurality of discharge parts configured to discharge the raw material liquid into the solution.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: April 19, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Shuhei Nakakura, Kazuhiko Tsuchioka, Koichiro Maki, Motoaki Saruwatari, Kazuomi Ryoshi, Masafumi Yoshida
  • Method for producing nickel-containing hydroxide
    Patent number: 11063258
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a particle growth step of promoting growth of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the particle growth step, a volume fraction of a highly supersaturated region in the aqueous solution where the molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 1.7 mol/m3 is less than 0.624% of the aqueous solution.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: July 13, 2021
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Shuhei Nakakura, Kazuhiko Tsuchioka, Koichiro Maki, Motoaki Saruwatari, Kazuomi Ryoshi, Yoshihiko Nakao
  • Method for producing nickel-containing hydroxide
    Patent number: 10781531
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a nucleation step of generating nuclei of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the nucleation step, a volume fraction of a highly supersaturated region in the aqueous solution where the molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 5.0 mol/m3 is less than 0.100% of the aqueous solution.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: September 22, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Shuhei Nakakura, Kazuhiko Tsuchioka, Koichiro Maki, Motoaki Saruwatari, Kazuomi Ryoshi, Yoshihiko Nakao, Masafumi Yoshida
  • Method for producing nickel-containing hydroxide
    Patent number: 10689262
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a particle growth step of promoting growth of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the particle growth step, an averaged value of the maximum accelerations of the flows of streamlines for the aqueous solution is greater than 600 m/s2.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: June 23, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Shuhei Nakakura, Kazuhiko Tsuchioka, Koichiro Maki, Motoaki Saruwatari, Kazuomi Ryoshi, Yoshihiko Nakao, Masafumi Yoshida
  • METHOD FOR PRODUCING NICKEL-CONTAINING HYDROXIDE
    Publication number: 20190309437
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a nucleation step of generating nuclei of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the nucleation step, a volume fraction of a highly supersaturated region in the aqueous solution where the molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 5.0 mol/m3 is less than 0.100% of the aqueous solution.
    Type: Application
    Filed: June 12, 2017
    Publication date: October 10, 2019
    Inventors: Shuhei NAKAKURA, Kazuhiko TSUCHIOKA, Koichiro MAKI, Motoaki SARUWATARI, Kazuomi RYOSHI, Yoshihiko NAKAO, Masafumi YOSHIDA
  • METHOD FOR PRODUCING NICKEL-CONTAINING HYDROXIDE
    Publication number: 20190292068
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a particle growth step of promoting growth of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the particle growth step, an averaged value of the maximum accelerations of the flows of streamlines for the aqueous solution is greater than 600 m/s2.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 26, 2019
    Inventors: Shuhei NAKAKURA, Kazuhiko TSUCHIOKA, Koichiro MAKI, Motoaki SARUWATARI, Kazuomi RYOSHI, Yoshihiko NAKAO, Masafumi YOSHIDA
  • CHEMICAL REACTION DEVICE AND PARTICLE PRODUCTION METHOD USING CHEMICAL REACTION DEVICE
    Publication number: 20190217260
    Abstract: A chemical reaction device that supplies a raw material liquid into a solution and causes particles to precipitate in the solution is provided. The chemical reaction device includes an agitation tank configured to accommodate the solution, an impeller configured to agitate the solution, and a plurality of discharge parts configured to discharge the raw material liquid into the solution.
    Type: Application
    Filed: June 12, 2017
    Publication date: July 18, 2019
    Inventors: Shuhei NAKAKURA, Kazuhiko TSUCHIOKA, Koichiro MAKI, Motoaki SARUWATARI, Kazuomi RYOSHI, Masafumi YOSHIDA
  • METHOD FOR PRODUCING NICKEL-CONTAINING HYDROXIDE
    Publication number: 20190140278
    Abstract: A method for producing a nickel-containing hydroxide is provided that includes a particle growth step of promoting growth of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the particle growth step, a volume fraction of a highly supersaturated region in the aqueous solution where the molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 1.7 mol/m3 is less than 0.624% of the aqueous solution.
    Type: Application
    Filed: June 12, 2017
    Publication date: May 9, 2019
    Inventors: Shuhei NAKAKURA, Kazuhiko TSUCHIOKA, Koichiro MAKI, Motoaki SARUWATARI, Kazuomi RYOSHI, Yoshihiko NAKAO