Patents by Inventor Yuichi INAGAWA

Yuichi INAGAWA 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).

  • Publication number: 20240042735
    Abstract: Provided is a liquid (e.g., ink) storage member for coating tools to reduce the consumption of plastic and the environmental impact by substituting paper base material for plastics such as polypropylene. The liquid storage member has at least three layers as follows: an inner layer made of paper base material and an intermediate layer of a paper base laminate comprising a metal layer or a silica vapor deposition layer formed on the outer surface side of the paper-based inner layer; and an outer layer made of paper base material formed on the outer surface side of the intermediate layer. The paper base laminate is wound into a spiral shape and on the outer surface side of the intermediate layer, the outer layer is also wound into a spiral shape. A polyolefin resin-containing adhesive layer lies in between the inner and intermediate layers and/or between the intermediate and outer layers.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 8, 2024
    Applicant: MITSUBISHI PENCIL COMPANY, LIMITED
    Inventors: Saki TANAKA, Takayuki YAMAGUCHI, Yuichi INAGAWA