Patents by Inventor Yujiro Sonoyama

Yujiro Sonoyama 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).

  • WIG KIT AND METHOD FOR PRODUCING WIG USING SAME
    Publication number: 20200146379
    Abstract: A wig kit includes a wig base cap and one or more hair members. The wig base cap is provided with one or more first fasteners, and the one or more hair members are each provided with a second fastener each having adhesiveness to the first fastener. The one or more hair members are fixed to the wig base cap through the second fastener separably adhered to the first fastener. A method for producing a wig includes fixing the one or more hair members to the wig base cap.
    Type: Application
    Filed: January 14, 2020
    Publication date: May 14, 2020
    Applicant: KANEKA CORPORATION
    Inventor: Yujiro Sonoyama
  • Artificial protein fibers for hair, manufacturing method therefor and head accessory containing same
    Patent number: 10604868
    Abstract: Protein fibers for artificial hair include a polycation, wherein the protein fibers for artificial hair are crosslinked with an organic compound and/or a metal salt, and the protein fibers for artificial hair have curls. A method for producing the protein fibers for artificial hair includes treating artificial protein fibers that are crosslinked with an organic compound and/or a metal salt with a treatment solution containing a polycation, and curling the artificial protein fibers, or curling artificial protein fibers that are crosslinked with an organic compound and/or a metal salt, and treating the curled artificial protein fibers with a treatment solution containing a polycation.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 31, 2020
    Assignee: KANEKA CORPORATION
    Inventors: Masato Fujita, Yujiro Sonoyama, Sohei Nishida
  • ARTIFICIAL PROTEIN FIBERS FOR HAIR, MANUFACTURING METHOD THEREFOR AND HEAD ACCESSORY CONTAINING SAME
    Publication number: 20180016709
    Abstract: Protein fibers for artificial hair include a polycation, wherein the protein fibers for artificial hair are crosslinked with an organic compound and/or a metal salt, and the protein fibers for artificial hair have curls. A method for producing the protein fibers for artificial hair includes treating artificial protein fibers that are crosslinked with an organic compound and/or a metal salt with a treatment solution containing a polycation, and curling the artificial protein fibers, or curling artificial protein fibers that are crosslinked with an organic compound and/or a metal salt, and treating the curled artificial protein fibers with a treatment solution containing a polycation.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Applicant: Kaneka Corporation
    Inventors: Masato Fujita, Yujiro Sonoyama, Sohei Nishida
  • Inner cap for a wig
    Patent number: D936937
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: November 30, 2021
    Assignee: KANEKA CORPORATION
    Inventor: Yujiro Sonoyama
  • Inner cap for a wig
    Patent number: D936938
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: November 30, 2021
    Assignee: KANEKA CORPORATION
    Inventor: Yujiro Sonoyama