Patents by Inventor Masaharu Nada

Masaharu Nada 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).

  • Plastic folder for retaining sheets of paper
    Patent number: 6485060
    Abstract: A plastic folder, for holding sheets of paper, which includes a front cover and a back cover connected by a hinge. The hinge includes a first fold line adjacent to the front cover, and a second fold line adjacent to the back cover, and a third fold line intermediate the first and second fold lines, thereby dividing the hinge into a first portion adjacent to the front cover and a second portion adjacent to the back cover. A pair of weld areas are disposed in the hinge so as to connect the first hinge portion to the second hinge portion. The weld areas are spaced from one another so as to produce a holding force on the paper inserted into the plastic folder. The first and second fold lines, together with the welded areas, produce a plastic folder that more securely, and durably, holds paper therein.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 26, 2002
    Assignee: Kokuyo Co., Ltd.
    Inventors: Masaharu Nada, Katsuyuki Tono
  • Plastic folder for retaining sheets of paper
    Publication number: 20020113427
    Abstract: A plastic folder, for holding sheets of paper, which includes a front cover and a back cover connected by a hinge. The hinge includes a first fold line adjacent to the front cover, and a second fold line adjacent to the back cover, and a third fold line intermediate the first and second fold lines, thereby dividing the hinge into a first portion adjacent to the front cover and a second portion adjacent to the back cover. A pair of weld areas are disposed in the hinge so as to connect the first hinge portion to the second hinge portion. The weld areas are spaced from one another so as to produce a holding force on the paper inserted into the plastic folder. The first and second fold lines, together with the welded areas, produce a plastic folder that more securely, and durably, holds paper therein.
    Type: Application
    Filed: February 20, 2001
    Publication date: August 22, 2002
    Inventors: Masaharu Nada, Katsuyuki Tono
  • Clear cover file
    Patent number: D458633
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: June 11, 2002
    Assignee: Kokuyo Kabushiki Kaisha
    Inventors: Masaharu Nada, Katsuyuki Tono
  • Toy building block
    Patent number: D577393
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: September 23, 2008
    Assignee: Kokuyo Co., Ltd.
    Inventors: Masaharu Nada, Hiroshi Kamikawa