Patents by Inventor Munenaka Koyama

Munenaka Koyama 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).

  • Water-dispersible paper
    Patent number: 9388532
    Abstract: A water dispersion paper made of wood pulp and/or non-wood pulp is characterized in that purified pulp containing ?-cellulose by 88 percent by weight or more accounts for 15 to 95 percent by weight of all pulp. The water dispersion paper has quick water dispersion property and high strength (printability) and its paper surface pH is 6 to 8 (neutral range).
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 12, 2016
    Assignee: NIPPON PAPER PAPYLIA CO., LTD.
    Inventors: Munenaka Koyama, Masaki Kishimoto, Yoshiaki Ishino
  • WATER-DISPERSIBLE PAPER
    Publication number: 20140338851
    Abstract: A water dispersion paper made of wood pulp and/or non-wood pulp is characterized in that purified pulp containing ?-cellulose by 88 percent by weight or more accounts for 15 to 95 percent by weight of all pulp. The water dispersion paper has quick water dispersion property and high strength (printability) and its paper surface pH is 6 to 8 (neutral range).
    Type: Application
    Filed: August 4, 2014
    Publication date: November 20, 2014
    Inventors: Munenaka KOYAMA, Masaki KISHIMOTO, Yoshiaki ISHINO
  • Water-dispersible paper
    Patent number: 8877678
    Abstract: An object of the present invention is to provide a water dispersion paper having quick water dispersion property and high strength (printability) and whose paper surface pH is 6 to 8 (neutral range), and also to provide a water dispersion coated paper designed to ensure quick water dispersion property and prevent discoloration over time. A water dispersion paper made of wood pulp and/or non-wood pulp, wherein said water dispersion paper is characterized in that purified pulp containing ?-cellulose by 88 percent by weight or more accounts for 15 to 95 percent by weight of all pulp, as well as a water dispersion coated paper having a water-soluble coating layer on said water dispersion paper.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: November 4, 2014
    Assignee: Nippon Paper Papylia Co., Ltd.
    Inventors: Munenaka Koyama, Masaki Kishimoto, Yoshiaki Ishino
  • WATER-DISPERSIBLE PAPER
    Publication number: 20140045684
    Abstract: An object of the present invention is to provide a water dispersion paper having quick water dispersion property and high strength (printability) and whose paper surface pH is 6 to 8 (neutral range), and also to provide a water dispersion coated paper designed to ensure quick water dispersion property and prevent discoloration over time. A water dispersion paper made of wood pulp and/or non-wood pulp, wherein said water dispersion paper is characterized in that purified pulp containing ?-cellulose by 88 percent by weight or more accounts for 15 to 95 percent by weight of all pulp, as well as a water dispersion coated paper having a water-soluble coating layer on said water dispersion paper.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 13, 2014
    Applicant: NIPPON PAPER PAPYLIA CO., LTD.
    Inventors: Munenaka Koyama, Masaki Kishimoto, Yoshiaki Ishino
  • Multi-layer paper peelable into at least two thin sheets
    Patent number: 6977111
    Abstract: Disclosed is a multi-layer paper suitable as a material for preparing heat-sensitive stencil printing masters. The multi-layer paper is produced by combining a plurality of thin paper layers by paper making. The multi-layer paper has a peel strength of 10 N/m or less and may be delaminated into at least two tissue sheets.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: December 20, 2005
    Assignees: Ricoh Company, Ltd., Tohoku Ricoh Co., Ltd., Mishima Paper Co., Ltd.
    Inventors: Hideyuki Yamaguchi, Hiroshi Tateishi, Ippei Kato, Munenaka Koyama, Yoshihiro Mimura
  • Multi-layer paper peelable into at least two thin sheets
    Publication number: 20020153110
    Abstract: Disclosed is a multi-layer paper suitable as a material for preparing heat-sensitive stencil printing masters. The multi-layer paper is produced by combining a plurality of thin paper layers by paper making. The multi-layer paper has a peel strength of 10 N/m or less and may be delaminated into at least two tissue sheets.
    Type: Application
    Filed: January 22, 2002
    Publication date: October 24, 2002
    Inventors: Hideyuki Yamaguchi, Hiroshi Tateishi, Ippei Kato, Munenaka Koyama, Yoshihiro Mimura