Patents by Inventor Katsunori SHIMAKURA

Katsunori SHIMAKURA 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).

  • Airless container
    Patent number: 11400471
    Abstract: An airless container includes a cylindrical container body storing a contained material, which is a fluid, in an airtight state, and a pump attached to an upper edge portion of the container body and configured to externally discharge the contained material. The airless container further includes a bottom lid that closes a lower opening portion of a container bottom portion of the container body, and a piston in the container body between the pump and the bottom lid, which is slidable in the container body in an airtight state. The piston includes a flexible piece that is deformable in a portion that comes into contact with the bottom lid. The flexible piece is deformable against the sliding of the piston toward the bottom lid.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: August 2, 2022
    Assignees: KITANO CO., LTD., KAKEN PHARMACEUTICAL CO., LTD.
    Inventors: Katsunori Shimakura, Masayoshi Takaoka, Tatsuro Nagao
  • AIRLESS CONTAINER
    Publication number: 20210291211
    Abstract: An airless container includes a cylindrical container body storing a contained material, which is a fluid, in an airtight state, and a pump attached to an upper edge portion of the container body and configured to externally discharge the contained material. The airless container further includes a bottom lid that closes a lower opening portion of a container bottom portion of the container body, and a piston in the container body between the pump and the bottom lid, which is slidable in the container body in an airtight state. The piston includes a flexible piece that is deformable in a portion that comes into contact with the bottom lid. The flexible piece is deformable against the sliding of the piston toward the bottom lid.
    Type: Application
    Filed: September 3, 2018
    Publication date: September 23, 2021
    Applicants: KITANO CO., LTD., KAKEN PHARMACEUTICAL CO., LTD.
    Inventors: Katsunori SHIMAKURA, Masayoshi TAKAOKA, Tatsuro NAGAO