Patents by Inventor Hirotomo Mukai

Hirotomo Mukai 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).

  • Publication number: 20150011960
    Abstract: A disposable wearing article includes a urination region, a rear waistline region arranged to the rear of the urination region, and a front waistline region arranged to the front of the urination region. An absorbent sheet having an absorbent polymer arranged between liquid-permeable sheets is configured to be provided in at least one of the buttocks region and the ventral region. An absorbent polymer arranged region including absorbent polymer is in at least one of the front waistline region and the rear waistline region. A deformation restraining unit is formed to be capable of restraining deformation of the urination region from being propagated to an absorbent polymer arranged region in the inner side in the front-back direction with respect to the inner end in the front-back direction of the absorbent polymer arranged region.
    Type: Application
    Filed: January 25, 2013
    Publication date: January 8, 2015
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Publication number: 20140378935
    Abstract: A disposable wearing article includes a urination region to be in contact with a urination unit of the wearer, a buttocks region to be in contact with buttocks of the wearer, and an absorbent sheet which includes an absorbent polymer sandwiched between liquid-impermeable layers. The absorbent sheet is disposed in the buttocks region but not in the urination region.
    Type: Application
    Filed: September 5, 2012
    Publication date: December 25, 2014
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Publication number: 20140338822
    Abstract: A method of manufacturing as absorbed article includes a first absorption layer-forming step of forming a first absolution layer configuring the absorber, and a second absorption layer-forming step of forming a second absorption layer configuring the absorber, and laminated on to the first absorption layer. In the first absorption layer-forming step, a first absorption layer is formed while forming the curving unit in symmetry with respect to a virtual central line dividing a width of the absorber in the widthwise direction into two, and extending in the longitudinal direction, and in the second absorption layer-forming step, the second absorption layer is formed without providing the curving unit in a crotch region that is adapted to be in contact with a crotch of the wearer.
    Type: Application
    Filed: August 23, 2012
    Publication date: November 20, 2014
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Arayama
  • Publication number: 20140188066
    Abstract: A disposable wearing article includes an absorber having a crotch region. The central curving unit that allows the absorber to be convex in the inner direction is formed at a center in the widthwise direction of the crotch region. The first curving unit that allows the absorber to be convex in the outer direction is formed in the crotch region and outboard of the central curving unit. The second curving unit that allows the absorber to be convex in the inner direction is formed in the crotch region and outboard of the first curving unit. The concave unit is formed in the absorber to be concaved inwardly in the widthwise direction at the outside in the longitudinal direction relative to the first curving unit. The second curving unit is arranged outboard of an inside edge in the widthwise direction of the concave unit in the widthwise direction.
    Type: Application
    Filed: June 27, 2012
    Publication date: July 3, 2014
    Applicant: UNI-CHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Arayama
  • Publication number: 20140058348
    Abstract: A disposable wearing article includes an absorber having a crotch region that is in contact with a crotch portion of the wearer, and a back region arranged posterior to the crotch region and in contact with the hip portion of the wearer, and in the crotch region, a pair of curving means are provided along the crosswise direction so as to enable the absorber to curve in a convex shape in an inner direction, and outside the widthwise direction of the curving means, a pair of lifting units are provided along the crosswise direction so as to enable the absorber to be lifted up in an inner direction in the back region, and the back ends of the curving means are positioned anterior to the back ends of the lifting units.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 27, 2014
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Publication number: 20140031783
    Abstract: A disposable wearing article includes a central curving unit that allows the absorber to curve in the inner direction in a convex shape is formed in the center of the absorber, a pair of first curving units along the front-back direction that allow the absorber to curve in the outer direction in a convex shape is formed outboard of the central curving unit of the absorber, a pair of second curving units along the front-back direction that allow the absorber to curve in the inner direction in a convex shape is formed outboard of the first curving unit of the absorber, and a front end of the central curving unit is positioned posteriorly of a front end of a second curving unit.
    Type: Application
    Filed: February 9, 2012
    Publication date: January 30, 2014
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Publication number: 20130289509
    Abstract: Provided are a bodily fluid absorbent article improved to absorb bodily fluids quickly and a method for making a core for the bodily fluid absorbent article. A bodily fluid absorbent core for a bodily fluid absorbent article is formed with one or more elongated depressions. The core 40 includes one or more surface layers and one or more inner sections lying inside the one or more surface layers. The one or more surface layers are formed primarily of liquid-absorbent fibers and the one or more inner sections are formed of the liquid-absorbent fibers and superabsorbent polymer particles.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 31, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Aryama
  • Publication number: 20130267924
    Abstract: An absorbent layer has a front section lying on the side of a front waist region, a rear section lying on the side of a rear waist region and an intermediate section lying between the front and rear sections. The absorbent layer is formed in the intermediate section with a central depression extending in a longitudinal direction Y and a high density zones having density higher than those of the front and rear sections are formed on both sides of the central depression.
    Type: Application
    Filed: December 22, 2011
    Publication date: October 10, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Arayama
  • Publication number: 20130110075
    Abstract: A wearing article includes a chassis and an absorber main body. The wearing article has a central elastic member overlapping a non-skin surface of an absorber in the crotch region and extending along a longitudinal direction at an approximately center of a widthwise direction of the wearing article, and a back leg elastic member that curves within the crotch region from the end of a back waistline region in the widthwise direction and configures at least a part of an elastic stress line that crosses the absorber along the widthwise direction. In the elastic stress line, the elastic stress of the portion crossing the absorber is smaller than the elastic stress of the central elastic member.
    Type: Application
    Filed: April 19, 2011
    Publication date: May 2, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Arayama
  • Publication number: 20130102987
    Abstract: In the disclosed absorbent article, in a first region, a first elastic member extends linearly in the widthwise direction, in a second region, a second elastic member extends linearly in the widthwise direction, the elongational stress of the first elastic member is greater than the elongational stress of the second elastic member, and the length in the widthwise direction of the joining region that is of both the main body of an absorbent body and a chassis in the first region is configured in a manner so as to be shorter than the length in the widthwise direction of the joining region that is of both the main body of the absorbent body and the chassis in the second region.
    Type: Application
    Filed: April 19, 2011
    Publication date: April 25, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Yoshihisa Watabe
  • Patent number: 8425485
    Abstract: 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: Grant
    Filed: September 27, 2011
    Date of Patent: April 23, 2013
    Assignee: Uni-Charm Corporation
    Inventors: Tomoko Tsuji, Hirotomo Mukai, Kenichi Sasayama, Tatsuya Hashimoto, Kei Wakasugi
  • Publication number: 20130079743
    Abstract: In the disclosed absorbent article (1), in a front torso-surrounding region (S10A), the distance (D1) between the elastic member (100A) that is most towards leg-surrounding openings among a plurality of elastic members that extend roughly linearly in the widthwise direction (W) and the edges (E1) that are on the leg-surrounding opening (P) side of the front torso-surrounding region (S10A) is configured in a manner so as to gradually shorten and then gradually lengthen when going from both side edges (C) towards the center in the widthwise direction (W).
    Type: Application
    Filed: April 19, 2011
    Publication date: March 28, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Yoshihisa Watabe
  • Publication number: 20130060219
    Abstract: In a crotch region in the disclosed absorbent article, a waist elastic member provided in a front waist region, and waist elastic members provided in a rear waist region are arranged so as to not come into contact with each other, and a linear identification part is provided in either the front waist region or the rear waist region, in a manner such that in a first region wherein an absorbent main body is provided the identification part is only visible from the side of the absorbent article which is not in contact with the skin, and in a second region wherein the absorbent main body is not provided the identification part is visible from both the side of the absorbent article which is in contact with the skin and that which is not.
    Type: Application
    Filed: April 7, 2011
    Publication date: March 7, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Yoshihisa Watabe
  • Publication number: 20130041336
    Abstract: A disposable diaper has a central elastic member formed along the lengthwise direction L so that the absorber can be curved to be convex in the inward direction, and a pair of side slits formed along the lengthwise direction L so that the absorber can be curved to be convex in the outward direction. A thickness of the absorber at the central portion and at the side edge portions are smaller than a thickness of the absorber at the middle portions.
    Type: Application
    Filed: February 25, 2011
    Publication date: February 14, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hirotomo Mukai, Takaya Arayama
  • Publication number: 20130030402
    Abstract: A disposable worn article diaper includes: a central slit formed in an absorber such that the absorber is curved to be convex toward an inward direction toward a wearer in a crotch region; side curved portions formed in the absorber along the lengthwise direction such that the absorber is curved to be convex toward the outward direction. The disposable worn article diaper includes a crossing elastic member crossing the absorber in middle crotch regions and fixed to the absorber. The absorber is contracted by the crossing elastic member toward a center of the absorber in the widthwise direction.
    Type: Application
    Filed: February 23, 2011
    Publication date: January 31, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Publication number: 20130030398
    Abstract: A disposable diaper has a central slit formed along the lengthwise direction L so that the absorber can be curved to be convex in the inward direction, and a pair of side slits formed along the lengthwise direction L so that the absorber can be curved to be convex in the outward direction. An average total weight of a water absorbent polymer at the central portion CT and the side edge portion SL, SR is smaller than an average total weight of the water absorbent polymer at the middle portion ML, MR.
    Type: Application
    Filed: February 25, 2011
    Publication date: January 31, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Takaya Arayama, Hirotomo Mukai
  • Patent number: 8361047
    Abstract: The absorbent article includes a chassis, a crotch region, an absorbent body, and an elastic member arranged along a side edge in width direction of the crotch region. The oblong absorbent body arranged in the crotch region includes a first narrow width section, a second narrow width section, a center low rigidity section formed along a center line that halves the absorbent article in the width direction and a pair of lateral low rigidity sections provided at both sides of the center low rigidity section in the width direction with a substantially equal interval. Skin contacting face-side sheets and non-skin contacting face-side sheets 6 and 10 are arranged in the crotch region. The initial tensile strength of the skin contacting face-side sheets is lower than that of the non-skin contacting face-side sheets or that of the chassis 2.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: January 29, 2013
    Assignee: Uni-Charm Corporation
    Inventors: Hirotomo Mukai, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • Publication number: 20120297605
    Abstract: A method of manufacturing an underpants-type absorbent article which method comprises each of the steps of transporting a continuous body of a sheet that forms a front piece or a back piece in the form of a sheet web in a machine direction, supplying a continuous elastic body to the sheet web while oscillating in a cross-machine direction, alternately positioning the continuous elastic body on the sheet web and outside the sheet web, attaching those portions of the continuous elastic body positioned on the sheet web to the sheet web, holding those portions of the continuous elastic body positioned outside the sheet web with a holder, and cutting and removing those portions of the continuous elastic body positioned outside the sheet web.
    Type: Application
    Filed: December 28, 2010
    Publication date: November 29, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Hidefumi Gouda, Hirotomo Mukai
  • Publication number: 20120302417
    Abstract: A method of manufacturing an underpants-type absorbent article having an outer body provided with a mutually separate front piece, back piece and connecting sheet, and wherein the front piece and the back piece are mutually joined at side areas and are mutually connected by the connecting sheet extending in the front-to-rear direction at the crotch area, and an inner body containing an absorptive body and which is overlapped and anchored to the connecting sheet on the inside of the outer body, comprises, in turn, transporting a continuous body of the front piece in the form of a front piece web and a continuous body of the back piece in the form of a back piece web in a machine direction while maintaining a spacing area in a cross-machine direction, forming a continuous body of the outer body in the form of an outer body web by attaching the connecting sheet to the front piece web and the back piece web at intervals in the machine direction so as to straddle the spacing area, cutting the outer body web in ord
    Type: Application
    Filed: December 28, 2010
    Publication date: November 29, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Hidefumi Gouda, Hirotomo Mukai
  • Publication number: 20120302985
    Abstract: An underpants-type absorbent article having an outer body provided with a mutually separate front piece, back piece and connecting sheet, and wherein the front piece and the back piece are mutually joined at side areas and are mutually connected by the connecting sheet extending in an front-to-rear direction at the crotch area, and an inner body containing an absorptive body and which is overlapped and anchored to the connecting sheet on the inside of the outer body. At least a portion of both edges in the transverse direction of the connecting sheet are positioned farther to the inside in the transverse direction than both edges in the transverse direction of the inner body in a spacing area between the front piece and the back piece.
    Type: Application
    Filed: January 11, 2011
    Publication date: November 29, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Hirotomo Mukai, Hidefumi Gouda, Takaya Arayama