Patents by Inventor Yuichi ISHIOKA

Yuichi ISHIOKA 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: 11185840
    Abstract: The present invention provides a continuous polymerization apparatus capable of simply and efficiently separating a polymer and solid matter from a reaction mixture while having an apparatus configuration conducive to washing and maintenance, and a continuous production method for a polymer. A continuous polymerization apparatus (100) includes a plurality of reaction vessels (1a to 1c), wherein the plurality of reaction vessels are configured such that reaction mixtures (9a to 9c) successively move through each reaction vessel; in the plurality of reaction vessels, gas phase parts formed above the reaction mixture communicate with one another; and the continuous polymerization apparatus includes a washing part (5), the washing part configured to separate a solid included in the reaction mixture by sedimentation and to perform countercurrent washing.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: November 30, 2021
    Assignee: KUREHA CORPORATION
    Inventors: Kenji Suzuki, Michihisa Miyahara, Hiroshi Sakabe, Yuichi Ishioka
  • Patent number: 11154835
    Abstract: The present invention provides a continuous polymerization apparatus capable of simply and efficiently separating a polymer and solid matter from a reaction mixture while having an apparatus configuration conducive to washing and maintenance, and a continuous production method for a polymer. A continuous polymerization apparatus (100) includes a plurality of reaction vessels (1a to 1c), wherein the plurality of reaction vessels are configured such that reaction mixtures (9a to 9c) successively move through each reaction vessel; in the plurality of reaction vessels, gas phase parts formed above the reaction mixture communicate with one another; and the continuous polymerization apparatus includes a washing part (5), the washing part configured to separate a solid included in the reaction mixture by sedimentation and to perform countercurrent washing.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: October 26, 2021
    Assignee: KUREHA CORPORATION
    Inventors: Kenji Suzuki, Michihisa Miyahara, Hiroshi Sakabe, Yuichi Ishioka
  • Publication number: 20200391172
    Abstract: The present invention provides a continuous polymerization apparatus capable of simply and efficiently separating a polymer and solid matter from a reaction mixture while having an apparatus configuration conducive to washing and maintenance, and a continuous production method for a polymer. A continuous polymerization apparatus (100) includes a plurality of reaction vessels (1a to 1c), wherein the plurality of reaction vessels are configured such that reaction mixtures (9a to 9c) successively move through each reaction vessel; in the plurality of reaction vessels, gas phase parts formed above the reaction mixture communicate with one another; and the continuous polymerization apparatus includes a washing part (5), the washing part configured to separate a solid included in the reaction mixture by sedimentation and to perform countercurrent washing.
    Type: Application
    Filed: October 11, 2018
    Publication date: December 17, 2020
    Inventors: Kenji SUZUKI, Michihisa MIYAHARA, Hiroshi SAKABE, Yuichi ISHIOKA