Patents by Inventor Seiichi Kuwano

Seiichi Kuwano 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: 9433540
    Abstract: A disposable pull-on diaper having a central inelastic region in at least one of a front waist region and a rear waist region, and a method for manufacturing the same. Front and rear waist regions of a disposable pull-on diaper are respectively of an elastically non-stretchable exterior sheet and elastically stretchable interior sheets. In lateral elastic regions of this waist region, the interior sheets are attached under tension to an interior surface of the exterior sheet and, in a central inelastic region, the interior sheets are spaced apart from each other in a transverse direction and regions of the interior sheets are in an elastically contracted and relaxed state in vicinities of the lateral elastic regions.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: September 6, 2016
    Assignee: Unicharm Corporation
    Inventors: Toshiyasu Yoshioka, Seiichi Kuwano
  • Patent number: 9358162
    Abstract: A wearing article having a waist-opening that can be easily folded back along a fold line extending in a transverse direction without increasing the stiffness in the vicinity of the waist-opening. A diaper includes front and rear waist members and a crotch member. A liquid-absorbent structure of the crotch member is formed outboard of in a longitudinal direction of a core with front and rear flaps exclusively composed of an absorption surface wrapping sheet, a leakage-barrier sheet and a bottom surface wrapping sheet. The front and rear waist members include first regions overlapping the front and rear flaps, respectively, second regions lying adjacent to the associated first regions and third regions lying adjacent to the associated second regions. The front and rear waist members are provided with the first, second and third waist elastics attached between respective inner and outer sheets in the first, second and third regions, respectively.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: June 7, 2016
    Assignee: Unicharm Corporation
    Inventors: Seiichi Kuwano, Yuki Hashino, Shunsuke Masaki
  • Patent number: 8777918
    Abstract: A disposable absorbent wearing article constructed with an absorbent core that may be deformed to form absorbent barriers against body waste and thereby an absorbent chassis that includes the absorbent core may be kept in contact with the wearer's torso with good fitness to improve appearance of the article put on the wearer's body and to prevent leak of body waste. The disposable absorbent wearing article comprising an absorbent chassis and an annular elasticized waist panel wherein the absorbent core of the absorbent chassis is formed with deformation guides so that at least opposite lateral regions of said absorbent core may be deformed along the deformation guides toward the wearer's torso under elastic contraction of at least a front waist panel constituting the annular waist panel.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: July 15, 2014
    Assignee: Unicharm Corporation
    Inventors: Seiichi Kuwano, Yoshio Ono
  • Patent number: 8672915
    Abstract: A wearing article having front and rear waist belt members that include waist elastic members attached thereto and spaced one from another in a longitudinal direction Y. On non-contractile regions, these elastic members do not overlap graphics on respective heat-sealable sheets or exert contractile force thereon. The non-contractile regions are formed by leaving between inner and outer sheets as well as between inner and outer sheets not coated with adhesive in respective middles of the front and rear waist belt members as viewed in a transverse direction X and cutting the waist elastic members attached under tension in the respective middles of the waist belt members. Along the ends of the non-contractile regions on the side of the crotch member, the inner and outer sheets as well as the inner and outer sheets are respectively joined to each other by means of heat sealing technique so as to form the joint zones.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: March 18, 2014
    Assignee: Unicharm Corporation
    Inventors: Seiichi Kuwano, Yoshio Ono, Kyota Saito
  • Publication number: 20130317468
    Abstract: A disposable pull-on diaper having a central inelastic region in at least one of a front waist region and a rear waist region, and a method for manufacturing the same. Front and rear waist regions of a disposable pull-on diaper are respectively of an elastically non-stretchable exterior sheet and elastically stretchable interior sheets. In lateral elastic regions of this waist region, the interior sheets are attached under tension to an interior surface of the exterior sheet and, in a central inelastic region, the interior sheets are spaced apart from each other in a transverse direction and regions of the interior sheets are in an elastically contracted and relaxed state in vicinities of the lateral elastic regions.
    Type: Application
    Filed: January 20, 2012
    Publication date: November 28, 2013
    Applicant: Unicharm Corporation
    Inventors: Toshiyasu Yoshioka, Seiichi Kuwano
  • Patent number: 8518009
    Abstract: A disposable diaper having a front waist region including elasticized regions extending at least in the transverse direction Y, wherein the elasticized regions comprise a first elasticized region defined between a waist-opening peripheral edge and a front end flap of the absorbent chassis so as to extend in the transverse direction Y. A second elasticized region is defined adjacent the first elasticized region so as to extend in the transverse direction Y, and a pair of third elasticized regions are defined adjacent the second elasticized region and spaced from and opposed to in the transverse direction Y on both sides of a non-elasticized region formed in a transverse middle of the front waist region. The second elasticized region extends across the front flap of the absorbent chassis.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: August 27, 2013
    Assignee: Uni-Charm Corporation
    Inventors: Kyota Saito, Seiichi Kuwano, Yoshio Ono
  • Patent number: 8518010
    Abstract: A disposable absorbent wearing article having an absorbent chassis and an annular elasticized waist panel. The elastic waist panel includes a front waist panel and a rear waist panel. A rear waist panel has a dimension in a longitudinal direction that is greater than that of the front waist panel and further includes a first elasticized region, a second elasticized region defining a waist band and a third elasticized region located toward a crotch region of the article. Tensile stress of the third elasticized region, as measured in a transverse direction, is less than the tensile stress of the first and second elasticized regions.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: August 27, 2013
    Assignee: Uni-Charm Corporation
    Inventors: Seiichi Kuwano, Yoshio Ono, Kyota Saito
  • Publication number: 20130079742
    Abstract: A wearing article having a waist-opening that can be easily folded back along a fold line extending in a transverse direction without increasing the stiffness in the vicinity of the waist-opening. A diaper includes front and rear waist members and a crotch member. A liquid-absorbent structure of the crotch member is formed outboard of in a longitudinal direction of a core with front and rear flaps exclusively composed of an absorption surface wrapping sheet, a leakage-barrier sheet and a bottom surface wrapping sheet. The front and rear waist members include first regions overlapping the front and rear flaps, respectively, second regions lying adjacent to the associated first regions and third regions lying adjacent to the associated second regions. The front and rear waist members are provided with the first, second and third waist elastics attached between respective inner and outer sheets in the first, second and third regions, respectively.
    Type: Application
    Filed: May 30, 2011
    Publication date: March 28, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Seiichi Kuwano, Yuki Hashino, Shunsuke Masaki
  • Publication number: 20120035573
    Abstract: A disposable diaper configured to restrict development of gaps between a pair of leakage-barrier cuffs formed on respective sides of a crotch region and the wearer's skin. The disposable diaper has a pair of cuffs extending in a longitudinal direction and being stretchable and contractible along respective sides thereof. One cuff of the paired cuffs includes a first elastic member attached to an outer edge of this cuff. The other cuff of the paired cuffs includes a proximal edge fixed to an inner side thereof and a second elastic member attached to a free edge thereof. At least one of the paired cuffs additionally includes a third elastic member attached thereto in the vicinity of the zone in which the proximal edge is fixed.
    Type: Application
    Filed: February 19, 2010
    Publication date: February 9, 2012
    Applicant: UNI-CHARM CORPORATION
    Inventors: Seiichi Kuwano, Yoshio Ono
  • Publication number: 20110106039
    Abstract: A disposable diaper to prevent an undesirable step from being formed due to downward displacement of a front end flap of an absorbent chassis during use of the diaper, to prevent body waste from leaking out and to assure a good appearance. A front waist region includes elasticized regions extending at least in the transverse direction Y, wherein the elasticized regions comprise a first elasticized region defined between a waist-opening peripheral edge and a front end flap of the absorbent chassis so as to extend in the transverse direction Y. A second elasticized region is defined adjacent the first elasticized region so as to extend in the transverse direction Y, and a pair of third elasticized regions are defined adjacent the second elasticized region and spaced from and opposed to in the transverse direction Y on both sides of a non-elasticized region formed in a transverse middle of the front waist region. The second elasticized region extends across the front flap of the absorbent chassis.
    Type: Application
    Filed: February 19, 2009
    Publication date: May 5, 2011
    Inventors: Kyota Saito, Seiichi Kuwano, Yoshio Ono
  • Publication number: 20110077609
    Abstract: A wearing article having front and rear waist belt members that include waist elastic members attached thereto and spaced one from another in a longitudinal direction Y. On non-contractile regions, these elastic members do not overlap graphics on respective heat-sealable sheets or exert contractile force thereon. The non-contractile regions are formed by leaving between inner and outer sheets as well as between inner and outer sheets not coated with adhesive in respective middles of the front and rear waist belt members as viewed in a transverse direction X and cutting the waist elastic members attached under tension in the respective middles of the waist belt members. Along the ends of the non-contractile regions on the side of the crotch member, the inner and outer sheets as well as the inner and outer sheets are respectively joined to each other by means of heat sealing technique so as to form the joint zones.
    Type: Application
    Filed: January 19, 2009
    Publication date: March 31, 2011
    Inventors: Seiichi Kuwano, Yoshio Ono, Kyota Saito
  • Publication number: 20110071488
    Abstract: A disposable absorbent wearing article having an absorbent chassis and an annular elasticized waist panel. The elastic waist panel includes a front waist panel and a rear waist panel. A rear waist panel has a dimension in a longitudinal direction that is greater than that of the front waist panel and further includes a first elasticized region, a second elasticized region defining a waist band and a third elasticized region located toward a crotch region of the article. Tensile stress of the third elasticized region, as measured in a transverse direction, is less than the tensile stress of the first and second elasticized regions.
    Type: Application
    Filed: February 18, 2009
    Publication date: March 24, 2011
    Inventors: Seiichi Kuwano, Yoshio Ono, Kyota Saito
  • Publication number: 20110066127
    Abstract: A disposable absorbent wearing article constructed with an absorbent core that may be deformed to form absorbent barriers against body waste and thereby an absorbent chassis that includes the absorbent core may be kept in contact with the wearer's torso with good fitness to improve appearance of the article put on the wearer's body and to prevent leak of body waste. The disposable absorbent wearing article comprising an absorbent chassis and an annular elasticized waist panel wherein the absorbent core of the absorbent chassis is formed with deformation guides so that at least opposite lateral regions of said absorbent core may be deformed along the deformation guides toward the wearer's torso under elastic contraction of at least a front waist panel constituting the annular waist panel.
    Type: Application
    Filed: February 18, 2009
    Publication date: March 17, 2011
    Inventors: Seiichi Kuwano, Yoshio Ono
  • Patent number: D572817
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: July 8, 2008
    Assignee: Uni-Charm Corporation
    Inventors: Seiichi Kuwano, Toshimitsu Baba