Patents by Inventor Takeharu Mukai

Takeharu Mukai 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: 20070199670
    Abstract: The present invention aims at preventing sanitary tissue paper from being torn when it is removed. The purpose is accomplished by sanitary tissue paper of single-ply or double-plies, characterized in that said paper has a lateral tensile strength on a dry condition of 32 N/m or more, a longitudinal tensile strength on a wet condition 32 N/m or more, and a longitudinal tensile strength on a dry condition which is 2.5 to 3.5 times higher than the lateral tensile strength on a dry condition.
    Type: Application
    Filed: November 20, 2006
    Publication date: August 30, 2007
    Applicant: Daio Paper Corporation
    Inventors: Takeharu Mukai, Yoshinori Shimizu, Shinya Sano, Naomi Inaba
  • Patent number: 7163732
    Abstract: Disclosed is a sanitary tissue paper roll wherein, when a sanitary tissue paper roll of two-ply or three-ply is laid on a horizontal surface with its central axis in a horizontal orientation, and a circular plate indenter, having an area of 2 cm2 and being arranged at a center of an upper surface of an outer periphery of a body of the roll, is vertically pressed at least at respective pressing pressures of 0.5 gf/cm2 and 50 gf/cm2, a difference in depths upon this respective pressing is within a range of 2.5–3.5 mm. Also disclosed is a sanitary tissue paper roll made by winding one sheet or two layered sheets of sanitary tissue papers wherein a roll compressibility of the roll is 0.68–0.74 m/cm2, with the roll compressibility being defined as a value obtained by dividing a roll length by a cross section of the roll.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: January 16, 2007
    Assignee: Daio Paper Corporation
    Inventors: Akira Hirasawa, Takeharu Mukai
  • Publication number: 20040234805
    Abstract: A sanitary tissue paper roll wherein, when a sanitary tissue paper roll of two-ply or three-ply is laid on a horizontal surface with its center axis in a horizontal orientation; and a circular plate indenter, having an area of 2 cm2 and being arranged at the center of an upper surface of an outer periphery of a body of said roll, is vertically pressed at least at respective pressing pressures of 0.5 gf/cm2 and 50 gf/cm2, a difference in depths upon said respective pressing is within a range of 2.5-3.5 mm. A sanitary tissue paper roll made by winding one sheet or two layered sheets of sanitary tissue papers wherein a roll compressibility of said roll is 0.68-0.74 m/cm2, said roll compressibility being defined as a value obtained by dividing a roll length by a cross section of said roll.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 25, 2004
    Inventors: Akira Hirasawa, Takeharu Mukai
  • Publication number: 20040112783
    Abstract: The present invention aims at preventing sanitary tissue paper from being torn when it is removed. The purpose is accomplished by sanitary tissue paper of single-ply or double-plies, characterized in that said paper has a lateral tensile strength on a dry condition of 32 N/m or more, a longitudinal tensile strength on a wet direction of 32 N/m or more, and a longitudinal tensile strength on a dry condition which is 2.5 to 3.5 times higher than the lateral tensile strength on a dry condition.
    Type: Application
    Filed: February 5, 2004
    Publication date: June 17, 2004
    Inventors: Takeharu Mukai, Yoshinori Shimizu, Shinya Sano, Naomi Inaba