Patents by Inventor Minenari Imada

Minenari Imada 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).

  • Papermaking press felt and press apparatus for a papermaking machine
    Patent number: 7135095
    Abstract: A press felt for use in a papermaking machine comprises a base body, a batt material and a hydrophilic nonwoven fabric, all intertwiningly integrated by needle punching. The batt material comprises a staple fiber, and is composed of a wet paper web side layer and a press side layer. The hydrophilic nonwoven fabric is provided in the wet paper web side layer. The hydrophilic character of the nonwoven fabric improves the movement of water to the nonwoven fabric, and the holding the water in the nonwoven fabric. As a result rewetting is prevented more effectively than in the case of prior press felts.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: November 14, 2006
    Assignees: Ichikawa Co., Ltd., Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroyuki Oda, Shin Kawashima, Kazumasa Watanabe, Minenari Imada, Hiroshi Iwata, Daisuke Goto, Hidemasa Iijima, Naoyuki Harada
  • Papermaking press felt and press apparatus for a papermaking machine
    Publication number: 20040137819
    Abstract: A press felt for use in a papermaking machine comprises a base body, a batt material and a hydrophilic nonwoven fabric, all intertwiningly integrated by needle punching. The batt material comprises a staple fiber, and is composed of a wet paper web side layer and a press side layer. The hydrophilic nonwoven fabric is provided in the wet paper web side layer. The hydrophilic character of the nonwoven fabric improves the movement of water to the nonwoven fabric, and the holding the water in the nonwoven fabric. As a result rewetting is prevented more effectively than in the case of prior press felts.
    Type: Application
    Filed: October 24, 2003
    Publication date: July 15, 2004
    Applicants: Ichikawa Co., Ltd., Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroyuki Oda, Shin Kawashima, Kazumasa Watanabe, Minenari Imada, Hiroshi Iwata, Daisuke Goto, Hidemasa Iijima, Naoyuki Harada
  • Shoe press belt and method of manufacture
    Patent number: 6086719
    Abstract: A shoe press belt for papermaking comprises an endless first resin layer formed on a polished surface of a mandrel; a base fabric layer comprising a woven fabric leaf arranged over the entire outer periphery of the first resin layer, at least one of the sets of intersecting threads of the fabric leaf being high-strength threads extending axially along the mandrel; a bobbin layer comprising high-strength thread circumferentially wound in a spiral on the outer periphery of the base fabric layer; and an endless second resin layer on the outer periphery of the bobbin layer, the second resin layer being in contact with the first layer through the base fabric layer and the bobbin layer. The shoe press belt constructed in this manner exhibits high strength in the machine direction as well as in the cross machine direction.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: July 11, 2000
    Assignee: Ichikawa Co., Ltd.
    Inventors: Yasuo Hasegawa, deceased, Minenari Imada