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).
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Patent number: 9592316Abstract: 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: GrantFiled: July 19, 2011Date of Patent: March 14, 2017Assignee: Unicharm CorporationInventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
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Patent number: 9237974Abstract: 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: GrantFiled: September 26, 2011Date of Patent: January 19, 2016Assignee: UNICHARM CORPORATIONInventors: Naoto Ohashi, Toshiya Yago
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Patent number: 9180058Abstract: 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: GrantFiled: July 19, 2011Date of Patent: November 10, 2015Assignee: Unicharm CorporationInventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
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Publication number: 20130178815Abstract: 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: ApplicationFiled: September 26, 2011Publication date: July 11, 2013Applicant: Unicharm CorporationInventors: Naoto Ohashi, Toshiya Yago
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Publication number: 20130131619Abstract: 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: ApplicationFiled: July 19, 2011Publication date: May 23, 2013Applicant: Unicharm CorporationInventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
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Publication number: 20130123727Abstract: 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: ApplicationFiled: July 19, 2011Publication date: May 16, 2013Inventors: Keiko Ichihara, Toshiya Yago, Naoto Ohashi, Makoto Suekane, Hiroki Ishikawa
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Publication number: 20120226252Abstract: 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: ApplicationFiled: August 13, 2010Publication date: September 6, 2012Applicant: Unicharm CorporationInventors: Toshiya Yago, Naoto Ohashi, Kei Wakasugi, Yasuhiro Yamanaka
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Publication number: 20120035578Abstract: 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: ApplicationFiled: February 15, 2010Publication date: February 9, 2012Applicant: UNI-CHARM CORPORATIONInventors: Yasuhiro Yamanaka, Kei Wakasugi, Toshiya Yago, Naoto Ohashi
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Publication number: 20120022489Abstract: 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: ApplicationFiled: February 15, 2010Publication date: January 26, 2012Applicant: UNI-CHARM CORPORATIONInventors: Kei Wakasugi, Toshiya Yago, Yasuhiro Yamanaka