Patents by Inventor Kunihiko Katsuragawa
Kunihiko Katsuragawa 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: 11648157Abstract: An absorbent article including an absorbent main body including an absorbent body. The absorbent main body having a longitudinal direction conforming to a vertical direction; and waist-circumference sections in a pair respectively located on one end side and another end side in the longitudinal direction of the absorbent main body. The waist-circumference sections each including an elastic memberstretchable in a lateral direction. The absorbent main body including a pair of extension sections respectively extending outward on two sides of the absorbent body. The extension sections each having an elastic member stretchable in the vertical direction. The extension sections are formed extending laterally outward from a position on a non-skin side of the absorbent body using a continuous sheet that is continuous in the lateral direction. A welded region having a predetermined length in the lateral direction is in a portion where each of the extension sections forms a leg opening.Type: GrantFiled: July 5, 2017Date of Patent: May 16, 2023Assignee: UNICHARM CORPORATIONInventors: Jun Fukasawa, Toshiyasu Yoshioka, Kunihiko Katsuragawa
-
Patent number: 11337868Abstract: A pull-on absorbent article includes: an absorbent main body including an absorbent body along a vertical direction; and waist-circumference sections in a pair respectively located on one end side and another end side of the absorbent main body, the waist-circumference sections each including an elastic member stretchable in a lateral direction, the absorbent main body including extension sections in a pair respectively extending outward on two lateral sides of the absorbent body, the extension sections each having an elastic member stretchable in the vertical direction placed therein, the extension sections each forming a leg opening and including an overlap portion that overlaps in the vertical direction with at least one of the waist-circumference sections in a pair, the overlap portion having at least a part joined to the waist-circumference section, the overlap portion of the extension section having a welded region having a predetermined lateral length placed therein.Type: GrantFiled: July 5, 2017Date of Patent: May 24, 2022Assignee: UNICHARM CORPORATIONInventors: Jun Fukasawa, Toshiyasu Yoshioka, Kunihiko Katsuragawa
-
Patent number: 10517774Abstract: An absorbent article has a longitudinal direction and a lateral direction perpendicular to each other, and includes a waist part along the lateral direction. The waist part includes nonwoven fabric and a plurality of stretchable members. In a state in which the waist part is extended along the lateral direction, an opening is formed in the waist part between stretchable members that are adjacent in the longitudinal direction. A high density region exists longitudinally between the opening and one of the adjacent stretchable members. An external region exists longitudinally between the high density region and another one of the adjacent stretchable members. The high density region has a predetermined lateral length. A density of fibers of the nonwoven fabric in the high density region is larger than in the external region. A part of an edge of the opening includes a portion in which fibers are not fused.Type: GrantFiled: August 30, 2016Date of Patent: December 31, 2019Assignee: UNICHARM CORPORATIONInventor: Kunihiko Katsuragawa
-
Publication number: 20190231610Abstract: An absorbent article has a longitudinal direction and a lateral direction perpendicular to each other, and includes a waist part along the lateral direction. The waist part includes nonwoven fabric and a plurality of stretchable members. In a state in which the waist part is extended along the lateral direction, an opening is formed in the waist part between stretchable members that are adjacent in the longitudinal direction. A high density region exists longitudinally between the opening and one of the adjacent stretchable members. An external region exists longitudinally between the high density region and another one of the adjacent stretchable members. The high density region has a predetermined lateral length. A density of fibers of the nonwoven fabric in the high density region is larger than in the external region. A part of an edge of the opening includes a portion in which fibers are not fused.Type: ApplicationFiled: August 30, 2016Publication date: August 1, 2019Inventor: Kunihiko KATSURAGAWA
-
Publication number: 20190209397Abstract: An absorbent article including an absorbent main body including an absorbent body. The absorbent main body having a longitudinal direction conforming to a vertical direction; and waist-circumference sections in a pair respectively located on one end side and another end side in the longitudinal direction of the absorbent main body. The waist-circumference sections each including an elastic memberstretchable in a lateral direction. The absorbent main body including a pair of extension sections respectively extending outward on two sides of the absorbent body. The extension sections each having an elastic member stretchable in the vertical direction. The extension sections are formed extending laterally outward from a position on a non-skin side of the absorbent body using a continuous sheet that is continuous in the lateral direction. A welded region having a predetermined length in the lateral direction is in a portion where each of the extension sections forms a leg opening.Type: ApplicationFiled: July 5, 2017Publication date: July 11, 2019Applicant: UNICHARM CORPORATIONInventors: Jun FUKASAWA, Toshiyasu YOSHIOKA, Kunihiko KATSURAGAWA
-
Publication number: 20190192357Abstract: A pull-on absorbent article includes: an absorbent main body including an absorbent body along a vertical direction; and waist-circumference sections in a pair respectively located on one end side and another end side of the absorbent main body, the waist-circumference sections each including an elastic member stretchable in a lateral direction, the absorbent main body including extension sections in a pair respectively extending outward on two lateral sides of the absorbent body, the extension sections each having an elastic member stretchable in the vertical direction placed therein, the extension sections each forming a leg opening and including an overlap portion that overlaps in the vertical direction with at least one of the waist-circumference sections in a pair, the overlap portion having at least a part joined to the waist-circumference section, the overlap portion of the extension section having a welded region having a predetermined lateral length placed therein.Type: ApplicationFiled: July 5, 2017Publication date: June 27, 2019Applicant: UNICHARM CORPORATIONInventors: Jun FUKASAWA, Toshiyasu YOSHIOKA, Kunihiko KATSURAGAWA
-
Patent number: 9579239Abstract: Disposable wearing articles having a liquid-absorbent structure which is sufficiently thin to ensure a comfortable wear feeling and adapted to eliminate the possibility that the appearance of the absorbing region after absorption of the bodily fluids might be visually recognized from the outside. A liquid-absorbent structure including absorbent materials is attached to a chassis by means of a liquid-absorbent structure bonding region formed on a skin-facing side. The liquid-absorbent structure bonding region includes opposite end bonding zones serving to fix first and second end segments of the liquid-absorbent structure and opposite lateral bonding zones serving to fix opposite lateral segments of the liquid-absorbent structure and a central non-bonding region is defined by a region surrounded by the opposite end bonding zones and the opposite lateral bonding zones.Type: GrantFiled: June 26, 2012Date of Patent: February 28, 2017Assignee: UNICHARM CORPORATIONInventors: Kenichi Sasayama, Makoto Ichikawa, Kunihiko Katsuragawa
-
Patent number: 9408759Abstract: A disposable diaper includes a chassis, front and rear waist regions, and a crotch region between the front and rear waist regions and a liquid-absorbent structure extending at least in the crotch region. The chassis includes a pair of first leg elastics, and a pair of second leg elastics. The first leg elastics are arranged so as to be rectilinear in the longitudinal direction. The second leg elastics are arranged at a distance from the longitudinal axis as viewed in the transverse direction larger than a distance from the longitudinal axis at which the first leg elastics are arranged and have rectilinear portions extending in the longitudinal direct at least in a portion of the crotch region close to the front waist region and curved portions spaced apart outwardly from each other from the rear waist region side ends of the rectilinear portions.Type: GrantFiled: June 3, 2013Date of Patent: August 9, 2016Assignee: UNICHARM CORPORATIONInventors: Kenichi Sasayama, Kunihiko Katsuragawa
-
Patent number: 9155667Abstract: A pant-type wearing article comprises a front panel, a rear panel and a central panel. The front panel cooperates with the rear panel to form a waist region. The central panel includes a front end portion separably joined to the outer side of the waist region and a rear end portion separably joined to the outer side of the waist region. Side edges of the front end portion opposed to each other in the transverse direction are formed with front side corner regions and side edges of the rear end portion opposed to each other in the transverse direction are formed with rear side corner regions. At least one of the paired front side corner regions and the paired rear side corner regions is not joined to the outer surface of the waist region to form a gripper region.Type: GrantFiled: March 4, 2011Date of Patent: October 13, 2015Assignee: UNICHARM CORPORATIONInventors: Makoto Ichikawa, Kenichi Sasayama, Kunihiko Katsuragawa
-
Patent number: 9107778Abstract: A disposable wearing includes a crotch chassis having a liquid-impervious sheet. The crotch chassis has a main region and opposite lateral portions lying outboard of the main region in the transverse direction and provided with leg elastic elements extending in the longitudinal direction. The opposite lateral portions respectively have fold lines extending in the longitudinal direction, outer side zones lying outboard of the respective fold lines in the transverse direction and inner side zones lying inboard of the respective fold lines in the transverse direction. The outer side zones of the respective lateral portions are folded inward and fixed to the associated inner side zones via associated bond zones extending in the longitudinal direction to form a pair of elastic lateral portions having folded back regions, respectively.Type: GrantFiled: January 27, 2012Date of Patent: August 18, 2015Assignee: UNICHARM CORPORATIONInventors: Kenichi Sasayama, Makoto Ichikawa, Kunihiko Katsuragawa
-
Patent number: 9072635Abstract: An absorbent article is formed by interposing superabsorbent polymer particles between overlapping two sheets. The pad-shaped absorbent article is composed of superabsorbent polymer particles bonded to the sheet with a hot melt adhesive, absorbing areas where the sheets are not bonded and sealing areas where the sheets are bonded together and surrounding the absorbing areas. Opposed two adjacent bonding areas of the absorbing areas have the sealing areas in between and facing edges which has the sealing areas in between. One of the facing edges is defined by a wavy line having crest and trough portions.Type: GrantFiled: January 25, 2012Date of Patent: July 7, 2015Assignee: UNICHARM CORPORATIONInventors: Kunihiko Katsuragawa, Kenichi Sasayama, Makoto Ichikawa
-
Patent number: 9072807Abstract: An absorbent article having a pad configuration, including superabsorbent polymer particles. Superabsorbent polymer particles are interposed between opposed surfaces of first and second layers overlapping with each other to form an absorbent article. The article includes an absorbing region and a sealing region. In the absorbing region, the superabsorbent polymer particles are bonded to the second layer with a hot melt adhesive. In the sealing region, the first layer and the second layer are joined to each other to surround the absorbing region.Type: GrantFiled: December 19, 2011Date of Patent: July 7, 2015Assignee: UNICHARM CORPORATIONInventors: Kunihiko Katsuragawa, Kenichi Sasayama, Makoto Ichikawa
-
Publication number: 20150182388Abstract: A disposable diaper provided at least in one of the front and rear waist regions with a pocket adapted to receive and to contain a relatively large amount of body exudates. A chassis includes a main portion, lateral portions lying outboard of the main portion in the transverse direction along which leg elastics extending in a longitudinal direction in the crotch region are provided and a pair of lateral elastic regions formed by folding the both lateral portions. At least in the rear waist region of the front and rear waist regions, waist pocket panels formed contiguously to or separately of elastic belt panels and adapted to connect the inner lateral edge portions of the lateral elastic regions are provided and the elastic belt panels are attached to the outer lateral portions of the lateral elastic regions.Type: ApplicationFiled: June 3, 2013Publication date: July 2, 2015Inventors: Kunihiko Katsuragawa, Kenichi Sasayama
-
Patent number: 9060901Abstract: A diaper includes front and rear waist members and a crotch member. The front and rear waist members are respectively formed with first narrowly-spaced elastic zones, widely-spaced elastic zones and second narrowly-spaced elastic zones adjacent one to another. Front and rear ends of the crotch member are bonded to respective sides of the front and rear waist members so that the crotch member's front and rear ends may positionally correspond to the second narrowly-spaced elastic zones. Cover sheets are attached to the side of the crotch member to cover the crotch member's front and rear ends respectively. A length dimension of the cover sheet in the longitudinal direction is set to be smaller than those of the front and rear waist members and a length dimension of the cover sheet in the transverse direction is substantially equal to those of the front and rear waist members.Type: GrantFiled: August 31, 2011Date of Patent: June 23, 2015Assignee: UNICHARM CORPORATIONInventors: Makoto Ichikawa, Kenichi Sasayama, Kunihiko Katsuragawa
-
Patent number: 9056029Abstract: A disposable pull-on wearing article including a pant-shaped chassis and an absorbent panel. A pull-on wearing article includes a pants-shaped chassis and an absorbent panel. The chassis has a front portion including a front waist region and part of a crotch region and a rear portion including a rear waist region and part of the crotch region. The front portion has a plurality of front waist elastics extending in a width direction and the rear portion has a plurality of rear waist elastics extending in the width direction. A bottom elastic of the front waist elastics and a bottom elastic of the rear waist elastics are in a stretched state in front peripheral edge portion and rear peripheral edge portion of respective leg-openings and in a relaxed state in a portion of the crotch region defined between a pair of the leg-openings.Type: GrantFiled: August 17, 2011Date of Patent: June 16, 2015Assignee: Unicharm CorporationInventors: Yoshitaka Mishima, Kunihiko Katsuragawa
-
Patent number: 9044357Abstract: A diaper includes front and rear waist members and a crotch member. The front and rear waist members are respectively formed with first narrowly-spaced elastic zones, widely-spaced elastic zones and second narrowly-spaced elastic zones adjacent one to another. Front and rear ends of the crotch member are bonded to respective sides of the front and rear waist members so that the crotch member's front and rear ends may positionally correspond to the second narrowly-spaced elastic zones. Cover sheets are attached to the side of the crotch member to cover the crotch member's front and rear ends respectively. A length dimension of the cover sheet in the longitudinal direction is set to be smaller than those of the front and rear waist members and a length dimension of the cover sheet in the transverse direction is substantially equal to those of the front and rear waist members.Type: GrantFiled: August 31, 2011Date of Patent: June 2, 2015Assignee: UNICHARM CORPORATIONInventors: Makoto Ichikawa, Kenichi Sasayama, Kunihiko Katsuragawa
-
Publication number: 20150126953Abstract: A disposable diaper includes a chassis, front and rear waist regions, and a crotch region between the front and rear waist regions and a liquid-absorbent structure extending at least in the crotch region. The chassis includes a pair of first leg elastics, and a pair of second leg elastics. The first leg elastics are arranged so as to be rectilinear in the longitudinal direction. The second leg elastics are arranged at a distance from the longitudinal axis as viewed in the transverse direction larger than a distance from the longitudinal axis at which the first leg elastics are arranged and have rectilinear portions extending in the longitudinal direct at least in a portion of the crotch region close to the front waist region and curved portions spaced apart outwardly from each other from the rear waist region side ends of the rectilinear portions.Type: ApplicationFiled: June 3, 2013Publication date: May 7, 2015Applicant: UNICHARM CORPORATIONInventors: Kenichi Sasayama, Kunihiko Katsuragawa
-
Publication number: 20140332436Abstract: A disposable wearing article adapted to restrict a possibility that the article might become locally bulky and a packaged assembly of such disposable wearing articles. A diaper (1) has front and rear waist panels (20, 30) defining front and rear waist regions (2, 3), respectively, and an intermediate panel (40) defining parts of the front and rear waist regions and a crotch region (4). The diaper (1) is folded on itself substantially in a flat condition so that inner sheets (24, 34) of the front and rear waist panels (20, 30) may face each other, respectively, and an inner sheet of the intermediate panel (40) may face itself. Specifically, the diaper (1) is folded on itself along a first fold line (81) at least partially corresponding to an imaginary transverse center line (Q-Q).Type: ApplicationFiled: June 28, 2012Publication date: November 13, 2014Inventors: Kenichi Sasayama, Makoto Ichikawa, Kunihiko Katsuragawa, Kazuo Ukegawa
-
Publication number: 20140171892Abstract: A disposable absorbent article includes a crotch inner sheet lying on a skin-facing surface, a crotch outer sheet lying on a non-skin-facing surface and a liquid-absorbent structure interposed between these inner and outer sheets. In this diaper, a total luminous transmittance from the outer sheet through the liquid-absorbent structure to the inner sheet is in a range of 15% to 65%. The liquid-absorbent structure has a longitudinal direction, a transverse direction and a thickness direction W and includes a first sheet and a second sheet overlapping each other and absorbent polymer particles interposed between these first and second sheets. Absorbing regions where the absorbent polymer particles are present and sealing regions where the absorbent polymer particles are not present are arranged alternately in the longitudinal direction. The first sheet and the second sheet are bonded in the sealing regions.Type: ApplicationFiled: April 4, 2012Publication date: June 19, 2014Applicant: UNICHARM CORPORATIONInventors: Makoto Ichikawa, Kenichi Sasayama, Kunihiko Katsuragawa
-
Publication number: 20140142531Abstract: Disposable wearing articles having a liquid-absorbent structure which is sufficiently thin to ensure a comfortable wear feeling and adapted to eliminate the possibility that the appearance of the absorbing region after absorption of the bodily fluids might be visually recognized from the outside. A liquid-absorbent structure including absorbent materials is attached to a chassis by means of a liquid-absorbent structure bonding region formed on a skin-facing side. The liquid-absorbent structure bonding region includes opposite end bonding zones serving to fix first and second end segments of the liquid-absorbent structure and opposite lateral bonding zones serving to fix opposite lateral segments of the liquid-absorbent structure and a central non-bonding region is defined by a region surrounded by the opposite end bonding zones and the opposite lateral bonding zones.Type: ApplicationFiled: June 26, 2012Publication date: May 22, 2014Applicant: UNICHARM CORPORATIONInventors: Kenichi Sasayama, Makoto Ichikawa, Kunihiko Katsuragawa