Patents by Inventor Toshiya Yago

Toshiya Yago 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: 9592316
    Abstract: A disposable wearing article adapted to prevent indicators from being transferred to a liquid-absorbent structure and to make the indicators develop the color reaction quickly in response to a discharge of body exudates. A disposable diaper has a topsheet, a backsheet and a liquid-absorbent structure interposed between these top- and backsheets. A surface of a first backsheet facing the liquid-absorbent structure is formed with indicators. The indicators contain a hot-melt polymer, an indicator agent adapted to develop a color reaction and a plasticizing oil. The liquid-absorbent structure has a liquid-absorbent core, a liquid-diffusive wrapping sheet adapted to wrap the core. A hydrophilic bottom sheet is interposed between a bottom surface of the core and a bottom surface region of the wrapping sheet. A dimension in the transverse direction of the bottom sheet is larger than a dimension of a region in which the indicators are formed and smaller than a dimension in the transverse direction of the core.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: March 14, 2017
    Assignee: Unicharm Corporation
    Inventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
  • Patent number: 9237974
    Abstract: A disposable diaper includes a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorber between the top sheet and back sheet, and having a front body waist region, a crotch region and a back body waist region. The top sheet is a nonwoven fabric having on the skin contact surface a plurality of ridges and a plurality of recesses extending in the lengthwise direction of the disposable diaper, and alternating in the widthwise direction perpendicular to the lengthwise direction. The top sheet has point-like compressed sections at a prescribed density in the front body waist region and/or back body waist region, the ridges in prescribed zones having different heights than the adjacent ridges at the same location in the lengthwise direction.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: January 19, 2016
    Assignee: UNICHARM CORPORATION
    Inventors: Naoto Ohashi, Toshiya Yago
  • Patent number: 9180058
    Abstract: A disposable wearing article improved so that leakage of body waste can be prevented, a change in color which might develop in an unused state of the wearing article can be inhibited and actually discharged body exudates can immediately cause an indicator to develop a change of color. A disposable diaper includes a topsheet, a backsheet and a liquid-absorbent structure interposed between these top- and backsheets. The backsheet includes first and second backsheets and the first backsheet is formed on its side facing the liquid-absorbent structure with an indicator adapted to develop a color reaction when the indicator comes in contact with at least one of moisture and body exudates. A plurality of such indicators is arranged to extend in a longitudinal direction and to be spaced apart from each other in a transverse direction. The liquid-absorbent structure includes a liquid-absorbent core and a wrapping sheet adapted to wrap the core.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: November 10, 2015
    Assignee: Unicharm Corporation
    Inventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
  • Publication number: 20130178815
    Abstract: A disposable diaper includes a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorber between the top sheet and back sheet, and having a front body waist region, a crotch region and a back body waist region. The top sheet is a nonwoven fabric having on the skin contact surface a plurality of ridges and a plurality of recesses extending in the lengthwise direction of the disposable diaper, and alternating in the widthwise direction perpendicular to the lengthwise direction. The top sheet has point-like compressed sections at a prescribed density in the front body waist region and/or back body waist region, the ridges in prescribed zones having different heights than the adjacent ridges at the same location in the lengthwise direction.
    Type: Application
    Filed: September 26, 2011
    Publication date: July 11, 2013
    Applicant: Unicharm Corporation
    Inventors: Naoto Ohashi, Toshiya Yago
  • Publication number: 20130131619
    Abstract: A disposable wearing article adapted to prevent indicators from being transferred to a liquid-absorbent structure and to make the indicators develop the color reaction quickly in response to a discharge of body exudates. A disposable diaper has a topsheet, a backsheet and a liquid-absorbent structure interposed between these top- and backsheets. A surface of a first backsheet facing the liquid-absorbent structure is formed with indicators. The indicators contain a hot-melt polymer, an indicator agent adapted to develop a color reaction and a plasticizing oil. The liquid-absorbent structure has a liquid-absorbent core, a liquid-diffusive wrapping sheet adapted to wrap the core. A hydrophilic bottom sheet is interposed between a bottom surface of the core and a bottom surface region of the wrapping sheet. A dimension in the transverse direction of the bottom sheet is larger than a dimension of a region in which the indicators are formed and smaller than a dimension in the transverse direction of the core.
    Type: Application
    Filed: July 19, 2011
    Publication date: May 23, 2013
    Applicant: Unicharm Corporation
    Inventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
  • Publication number: 20130123727
    Abstract: A disposable wearing article improved so that leakage of body waste can be prevented, a change in color which might develop in an unused state of the wearing article can be inhibited and actually discharged body exudates can immediately cause an indicator to develop a change of color. A disposable diaper includes a topsheet, a backsheet and a liquid-absorbent structure interposed between these top- and backsheets. The backsheet includes first and second backsheets and the first backsheet is formed on its side facing the liquid-absorbent structure with an indicator adapted to develop a color reaction when the indicator comes in contact with at least one of moisture and body exudates. A plurality of such indicators is arranged to extend in a longitudinal direction and to be spaced apart from each other in a transverse direction. The liquid-absorbent structure includes a liquid-absorbent core and a wrapping sheet adapted to wrap the core.
    Type: Application
    Filed: July 19, 2011
    Publication date: May 16, 2013
    Inventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
  • Publication number: 20120226252
    Abstract: Provided is a disposable bodily fluid absorbent wearing article including a liquid-pervious topsheet formed with ridges and troughs extending in parallel to each other, improved to attach a leakage-barrier thereto. A bodily fluid absorbent core material assembly is interposed between a liquid-pervious topsheet and a liquid-impervious backsheet. The topsheet is formed on its outer surface with ridges and troughs extending in parallel to each other in a front-back direction. Opposite outer edges in a width direction of the core material assembly are formed with leakage-barriers, respectively. Opposite lateral regions of the topsheet extending outward at least partially beyond opposite side edges of the core material assembly are compressed so as to lower a height of the ridges.
    Type: Application
    Filed: August 13, 2010
    Publication date: September 6, 2012
    Applicant: Unicharm Corporation
    Inventors: Toshiya Yago, Naoto Ohashi, Kei Wakasugi, Yasuhiro Yamanaka
  • Publication number: 20120035578
    Abstract: The present invention provides an absorbent article adapted to prevent body waste from leaking beyond leakage-barrier cuffs and thereby to restrict leakage of body waste from the article. A chassis 14 forming a diaper 10 includes a top-sheet 40 lying on a side facing the wearer's skin and a back-sheet 50 lying on the opposite side wherein the top-sheet 40 has a plurality of convex streaks extending in a longitudinal direction Y and a plurality of concave streaks each defined between a pair of the adjacent convex streaks. Opposite side edges 23 of a liquid-absorbent structure 20 respective include middle segments extending in a crotch region 13 and front and rear segments respectively extending in front and rear waist regions 11, 12 having width dimensions in a transverse direction X larger than a width dimension in the transverse direction of the middle segments.
    Type: Application
    Filed: February 15, 2010
    Publication date: February 9, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Yasuhiro Yamanaka, Kei Wakasugi, Toshiya Yago, Naoto Ohashi
  • Publication number: 20120022489
    Abstract: A diaper includes a chassis, a liquid-absorbent structure and containment cuffs. An inner sheet in the chassis includes a plurality of ridges and grooves extending in a longitudinal direction Y. Between a rear end of the liquid-absorbent structure and rear waist elastics, a spacing zone is defined. Cuff elastics are attached in a contractible manner to cuffs' inner side edges wherein opposite ends of the cuff elastics are spaced from cuffs' front and rear ends, respectively. Upon contraction of the cuff elastics, the cuffs' inner side edges is pulled inward in the longitudinal direction Y and folded about the inner ends of the respective inner bond zones toward the wearer's body so as to form a folded crest. Formation of the folded crest makes a portion of the inner sheet closer to its rear end than the folded crest to form a folded trough on the garment-facing side.
    Type: Application
    Filed: February 15, 2010
    Publication date: January 26, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Kei Wakasugi, Toshiya Yago, Yasuhiro Yamanaka