Patents by Inventor Katsushi Sakano

Katsushi Sakano 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).

  • Patent number: 8439885
    Abstract: A disposable diaper is provided, including an absorber, a top sheet disposed to cover the upper surface of the absorber and at least partially formed of a liquid permeable material, a back sheet disposed to cover the lower surface of the absorber and formed of a liquid impermeable material, and a skin contact sheet disposed above the top sheet and formed with a stool passing opening capable of passing a stool therethrough. The stool passing opening is formed into such a shape that a posterior region posterior to a centerline in the anteroposterior direction of the stool passing opening is smaller in the opening area than an anterior region anterior to the centerline.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: May 14, 2013
    Assignees: Oji Nepia Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Katsushi Sakano, Izumi Tashiro, Katsuhiko Sugiyama, Kahori Suzuki
  • Patent number: 7785310
    Abstract: A disposable diaper is provided, including an absorber, a top sheet arranged to cover the top surface of the absorber, a back sheet arranged to cover the bottom surface of the absorber, and a skin-contact sheet arranged over the top sheet. The top sheet is at least partially composed of a liquid-permeable material, the back sheet is composed of a liquid-impermeable material, and the skin-contact sheet is at least partially composed of a breathable waterproof sheet and is provided with a feces-passing opening capable of allowing feces to pass therethrough.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: August 31, 2010
    Assignees: Oji Nepia Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Katsushi Sakano, Katsuhiko Sugiyama, Izumi Tashiro, Tomotsugu Miyoshi
  • Publication number: 20070088304
    Abstract: There is provided a disposable diaper which can allow the skin of a wearer to be negligibly brought into direct contact with excreted feces and can efficiently prevent urine backflow and feces backflow. The disposable diaper includes an absorber, a top sheet arranged so as to cover the top surface of the absorber, a back sheet arranged so as to cover the bottom surface of the absorber, and a skin-contact sheet arranged over the top sheet. The top sheet is at least partially composed of a liquid-permeable material, the back sheet is composed of a liquid-impermeable material, and the skin-contact sheet is at least partially composed of a breathable waterproof sheet and is provided with an opening (feces-passing opening) allowing passage of feces.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 19, 2007
    Applicants: Oji Nepia Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Katsushi Sakano, Katsuhiko Sugiyama, Izumi Tashiro, Tomotsugu Miyoshi
  • Publication number: 20070088305
    Abstract: The present invention provides a disposable diaper capable of effectively preventing a stool once dropped on a top sheet through a skin contact sheet from adhering to the buttocks of a wearer of the diaper. The disposable diaper includes an absorber, a top sheet disposed to cover the upper surface of the absorber and at least partially formed of a liquid permeable material, a back sheet disposed to cover the lower surface of the absorber and formed of a liquid impermeable material, and a skin contact sheet disposed above the top sheet and formed with a stool passing opening capable of passing a stool therethrough. The stool passing opening is formed into such a shape that a posterior region posterior to a centerline in the anteroposterior direction of the stool passing opening is smaller in the opening area than an anterior region anterior to the centerline.
    Type: Application
    Filed: October 10, 2006
    Publication date: April 19, 2007
    Applicants: Oji Nepia Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Katsushi Sakano, Izumi Tashiro, Katsuhiko Sugiyama, Kahori Suzuki