Patents by Inventor Kei Wakasugi
Kei Wakasugi 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: 9205005Abstract: An absorbent article has a liquid-permeable top sheet of a white non-woven fabric, a liquid-impermeable back sheet opposing the top sheet, and an absorbent between the top sheet and the back sheet. A colored element is provided on the side of the top sheet that does not contact the skin, is visible through the top sheet, and is colored to a color other than white. The top sheet has protrusions and indentations in the thickness direction. The basic weight of the protrusions is greater than the basic weight of the indentations. The color difference between the Lab value of the color of the colored element visible through the protrusions of the top sheet and the Lab value of the color of the colored element visible through the indentations of the top sheet is 2.8 or more.Type: GrantFiled: September 26, 2011Date of Patent: December 8, 2015Assignee: UNICHARM CORPORATIONInventors: Kyo Kikuchi, Kei Wakasugi, Junko Ueda, Naoto Ohashi, Yasuhiro Yamanaka
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Patent number: 9018436Abstract: An absorbent structure that includes a first region, a second region and a central region extending between the first and second regions, the first region and part of the central region are formed with a thick segment. The second region is formed with a thin segment having a thickness dimension smaller than that of the thick segment. Between the thick segment and the thin segment, a thickness-sloped segment having a thickness dimension gradually reduced from the side of the first region toward the second region and the thin segment and at least a region of the thickness-sloped segment being adjacent to the thin segment are debossed.Type: GrantFiled: January 27, 2012Date of Patent: April 28, 2015Assignee: Unicharm CorporationInventors: Kyo Kikuchi, Kei Wakasugi, Naoto Ohashi, Osamu Ishikawa
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Patent number: 8986274Abstract: The present invention provides an absorbent article in which a joining strength between sheet-shaped members is improved. A joint portion which joins a front trunk-surrounding region and a rear trunk-surrounding region of the absorbent article to each other has a first joint region arranged continuously along an outer edge and the second joint portion arranged continuously in a region closer to the outer edge than the first joint region, substantially parallel to the first joint region. The sum of the areas of the plurality of first joint portions in the first joint region is less than the sum of the areas of the second joint portions in the second joint region.Type: GrantFiled: December 6, 2007Date of Patent: March 24, 2015Assignee: Uni-Charm CorporationInventors: Kenichi Sasayama, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Shinji Noma, Kei Wakasugi
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Publication number: 20130296819Abstract: An absorbent structure that includes a first region, a second region and a central region extending between the first and second regions, the first region and part of the central region are formed with a thick segment. The second region is formed with a thin segment having a thickness dimension smaller than that of the thick segment. Between the thick segment and the thin segment, a thickness-sloped segment having a thickness dimension gradually reduced from the side of the first region toward the second region and the thin segment and at least a region of the thickness-sloped segment being adjacent to the thin segment are debossed.Type: ApplicationFiled: January 27, 2012Publication date: November 7, 2013Applicant: Unicharm CorporationInventors: Kyo Kikuchi, Kei Wakasugi, Naoto Ohashi, Osamu Ishikawa
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Publication number: 20130178811Abstract: An absorbent article has a liquid-permeable top sheet of a white non-woven fabric, a liquid-impermeable back sheet opposing the top sheet, and an absorbent between the top sheet and the back sheet. A colored element is provided on the side of the top sheet that does not contact the skin, is visible through the top sheet, and is colored to a color other than white. The top sheet has protrusions and indentations in the thickness direction. The basic weight of the protrusions is greater than the basic weight of the indentations. The color difference between the Lab value of the color of the colored element visible through the protrusions of the top sheet and the Lab value of the color of the colored element visible through the indentations of the top sheet is 2.8 or more.Type: ApplicationFiled: September 26, 2011Publication date: July 11, 2013Applicant: UNICHARM CORPORATIONInventors: Kyo Kikuchi, Kei Wakasugi, Junko Ueda, Naoto Ohashi, Yasuhiro Yamanaka
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Patent number: 8425485Abstract: The present invention provides an absorbent article having a composite sheet with a plurality of gathers on an inner surface facing a wearer's body, which fits and adheres comfortably to the wearer's skin. The composite sheet is provided which includes a stretchable non-woven fabric which expands and contracts in at least one direction, a non-stretchable non-woven fabric, a junction which binds intermittently the stretchable non-woven fabric to the non-stretchable non-woven fabric in the stretching direction, and a plurality of gathers which is formed by loosening a unbounded area of the non-stretchable non-woven fabric in a contracted state, and is arranged along a direction intersecting the stretching direction, in which an apex of each gather does not reach the neighboring gather when the gathers lean to one side of the stretchable direction.Type: GrantFiled: September 27, 2011Date of Patent: April 23, 2013Assignee: Uni-Charm CorporationInventors: Tomoko Tsuji, Hirotomo Mukai, Kenichi Sasayama, Tatsuya Hashimoto, Kei Wakasugi
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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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Patent number: 8147474Abstract: The present invention provides an absorbent article 1 that does not easily warp in a leg-surrounding portion. The absorbent article 1 includes an absorbing member 2 in an elongated shape arranged along a longitudinal direction of the absorbent article, and a stretchable chassis 3 having a leg-surrounding portion 3a recessed inward in a width direction. At least a part of the chassis 3 is composed of a composite sheet 13 obtained by affixing a stretchable sheet 15 and a non-stretchable sheet 16 to each other by a plurality of adhesive portions 18. The leg-surrounding portion 3a has an intersection crossing an expansion and contraction direction of the chassis 3 at a predetermined angle. The plurality of adhesive portions 18 extend in a direction substantially perpendicular to the expansion and contraction direction.Type: GrantFiled: November 27, 2007Date of Patent: April 3, 2012Assignee: Uni-Charm CorporationInventors: Kei Wakasugi, Hirotomo Mukai, Tomoko Tsuji, Kenichi Sasayama, Tatsuya Hashimoto
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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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Patent number: 8105305Abstract: The present invention provides an absorbent article having a composite sheet with a plurality of gathers on an inner surface facing a wearer's body, which fits and adheres comfortably to the wearer's skin. The composite sheet is provided which includes a stretchable non-woven fabric which expands and contracts in at least one direction, a non-stretchable non-woven fabric, a junction which binds intermittently the stretchable non-woven fabric to the non-stretchable non-woven fabric in the stretching direction, and a plurality of gathers which is formed by loosening a unbounded area of the non-stretchable non-woven fabric in a contracted state, and is arranged along a direction intersecting the stretching direction, in which an apex of each gather does not reach the neighboring gather when the gathers lean to one side of the stretchable direction.Type: GrantFiled: November 27, 2007Date of Patent: January 31, 2012Assignee: Unicharm CorporationInventors: Tomoko Tsuji, Hirotomo Mukai, Kenichi Sasayama, Tatsuya Hashimoto, Kei Wakasugi
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Publication number: 20120022486Abstract: The present invention provides an absorbent article having a composite sheet with a plurality of gathers on an inner surface facing a wearer's body, which fits and adheres comfortably to the wearer's skin. The composite sheet is provided which includes a stretchable non-woven fabric which expands and contracts in at least one direction, a non-stretchable non-woven fabric, a junction which binds intermittently the stretchable non-woven fabric to the non-stretchable non-woven fabric in the stretching direction, and a plurality of gathers which is formed by loosening a unbounded area of the non-stretchable non-woven fabric in a contracted state, and is arranged along a direction intersecting the stretching direction, in which an apex of each gather does not reach the neighboring gather when the gathers lean to one side of the stretchable direction.Type: ApplicationFiled: September 27, 2011Publication date: January 26, 2012Applicant: c/o Technical Center, Uni-Charm CorporationInventors: Tomoko TSUJI, Hirotomo Mukai, Kenichi Sasayama, Tatsuya Hashimoto, Kei Wakasugi
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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
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Publication number: 20110046593Abstract: The present invention aims to provide a disposable diaper including leak barriers improved in its function to prevent loose passage from infiltrating thereinto and eventually leaching out therethrough. A disposable diaper (1) is provided with leak barriers (21) attached to opposite side edges of a crotch region (6) so that these leak barriers (21) may raise themselves on an inner sheet (3). The leak barriers (21) are formed of a nonwoven fabric made of thermoplastic synthetic fibers having a fineness in a range of 0.5 to 6 dtex and have a specific volume in a range of 9 to 13 cm3/g and a thickness in a range of 0.35 to 0.75 mm.Type: ApplicationFiled: February 19, 2009Publication date: February 24, 2011Applicant: UNI-CHARM CORPORATIONInventors: Kei Wakasugi, Yoshitaka Mishima, Kyo Kikuchi
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Patent number: 7887523Abstract: A disposable diaper enabling the male sex organ to be drawn out easily at the time of urination, which includes: a chassis having at least a front body and a rear body when wearing; a liquid permeable top sheet arranged in at least part of the chassis; a liquid impermeable back sheet on one side in the thickness direction of the top sheet; and a liquid retentive absorber between the top sheet and the back sheet. The chassis has a first chassis and a second chassis. The front body of the chassis has an overlapping section formed by overlapping in at least part of the first and second chassis. The overlapping section has connecting sections for connecting the first and second chassis separated across a substantially center line, which extends in the longitudinal direction of the diaper and divides the width direction into two parts, and a non-connecting section between the connecting sections.Type: GrantFiled: September 25, 2007Date of Patent: February 15, 2011Assignee: Uni-Charm CorporationInventors: Kenichi Sasayama, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Kei Wakasugi
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Publication number: 20110022020Abstract: The present invention provides an absorbent article 1 that does not easily warp in a leg-surrounding portion. The absorbent article 1 includes an absorbing member 2 in an elongated shape arranged along a longitudinal direction of the absorbent article, and a stretchable chassis 3 having a leg-surrounding portion 3a recessed inward in a width direction. At least a part of the chassis 3 is composed of a composite sheet 13 obtained by affixing a stretchable sheet 15 and a non-stretchable sheet 16 to each other by a plurality of adhesive portions 18. The leg-surrounding portion 3a has an intersection crossing an expansion and contraction direction of the chassis 3 at a predetermined angle. The plurality of adhesive portions 18 extend in a direction substantially perpendicular to the expansion and contraction direction.Type: ApplicationFiled: September 29, 2010Publication date: January 27, 2011Applicant: Uni-Charm CorporationInventors: Kei Wakasugi, Hirotomo Mukai, Tomoko Tsuji, Kenichi Sasayama, Tatsuya Hashimoto
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Publication number: 20080269711Abstract: A disposable diaper enabling the male sex organ to be drawn out easily at the time of urination, which includes: a chassis having at least a front body and a rear body when wearing; a liquid permeable top sheet arranged in at least part of the chassis; a liquid impermeable back sheet on one side in the thickness direction of the top sheet; and a liquid retentive absorber between the top sheet and the back sheet. The chassis has a first chassis and a second chassis. The front body of the chassis has an overlapping section formed by overlapping in at least part of the first and second chassis. The overlapping section has connecting sections for connecting the first and second chassis separated across a substantially center line, which extends in the longitudinal direction of the diaper and divides the width direction into two parts, and a non-connecting section between the connecting sections.Type: ApplicationFiled: September 25, 2007Publication date: October 30, 2008Applicant: UNI-CHARM CORPORATIONInventors: Kenichi Sasayama, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Kei Wakasugi
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Publication number: 20080140038Abstract: The present invention provides an absorbent article in which a joining strength between sheet-shaped members is improved. A joint portion which joins a front trunk-surrounding region and a rear trunk-surrounding region of the absorbent article to each other has a first joint region arranged continuously along an outer edge and the second joint portion arranged continuously in a region closer to the outer edge than the first joint region, substantially parallel to the first joint region. The sum of the areas of the plurality of first joint portions in the first joint region is less than the sum of the areas of the second joint portions in the second joint region.Type: ApplicationFiled: December 6, 2007Publication date: June 12, 2008Applicant: Uni-Charm CorporationInventors: Kenichi Sasayama, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Shinji Noma, Kei Wakasugi
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Publication number: 20080125740Abstract: The present invention provides an absorbent article 1 that does not easily warp in a leg-surrounding portion. The absorbent article 1 includes an absorbing member 2 in an elongated shape arranged along a longitudinal direction of the absorbent article, and a stretchable chassis 3 having a leg-surrounding portion 3a recessed inward in a width direction. At least a part of the chassis 3 is composed of a composite sheet 13 obtained by affixing a stretchable sheet 15 and a non-stretchable sheet 16 to each other by a plurality of adhesive portions 18. The leg-surrounding portion 3a has an intersection crossing an expansion and contraction direction of the chassis 3 at a predetermined angle. The plurality of adhesive portions 18 extend in a direction substantially perpendicular to the expansion and contraction direction.Type: ApplicationFiled: November 27, 2007Publication date: May 29, 2008Applicant: Uni-Charm CorporationInventors: Kei Wakasugi, Hirotomo Mukai, Tomoko Tsuji, Kenichi Sasayama, Tatsuya Hashimoto
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Patent number: D583935Type: GrantFiled: June 7, 2007Date of Patent: December 30, 2008Assignee: Uni-Charm CorporationInventors: Kenichi Sasayama, Yoshikazu Tanaka, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Kei Wakasugi
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Patent number: D583936Type: GrantFiled: June 7, 2007Date of Patent: December 30, 2008Assignee: Uni-Charm CorporationInventors: Kenichi Sasayama, Yoshikazu Tanaka, Hirotomo Mukai, Tomoko Tsuji, Tatsuya Hashimoto, Kei Wakasugi