Patents by Inventor Kazuya Nishitani

Kazuya Nishitani 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: 9492331
    Abstract: To provide an absorbent article that can further reduce leakage of body fluid from an end portion in a longitudinal direction. An elongated shaped absorbent article includes: a top sheet that has a skin contacting surface; a back sheet; and an absorbent core that is disposed between the top sheet and the back sheet, in which a compressed groove is formed on the skin contacting surface; the skin contacting surface has an excretory contact region, a front region, and a rear region; the compressed groove has a pair of first central grooves and a first circular groove that is provided in at least any one of the front region and the rear region; and the first circular groove is arranged at a position overlapping a vertical center line.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: November 15, 2016
    Assignee: UNICHARM CORPORATION
    Inventors: Katsuhiro Uematsu, Quing Cao, Yukihiro Ito, Hiroyuki Harada, Kazuya Nishitani
  • Patent number: 9029626
    Abstract: An absorbent article includes a first curved portion and a second curved portion formed on the surface of a topsheet along a longitudinal direction of the absorbent article. The first curved portion is arranged in one pair to be symmetrical to a centerline of the absorbent article in a region in which the contact region is included, the region being an inside region more than each side part in a widthwise direction of the absorbent article, and is formed along a longitudinal direction of the absorbent article. The second curved portion is arranged in one pair in a region in which the contact region is included, the region being an inside region in the widthwise direction of the absorbent article more than the first curved portion, and is formed along the longitudinal direction of the absorbent article. The first curved portion and the second curved portion has a convex shape outward in the widthwise direction of the absorbent article, in the region in which the contact region is included.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: May 12, 2015
    Assignee: Unicharm Corporation
    Inventors: Kazuya Nishitani, Toshihisa Hayashi, Minako Sagisaka
  • Patent number: 8591487
    Abstract: There is provided an absorbent article having a surface member joined in consideration of absorptivity. The absorbent article has a longitudinal direction, a width direction, and a thickness direction and is worn on a body. The absorbent article includes: an absorbent member for absorbing fluid; and a fluid-permeable surface member, wherein the surface member covers the absorbent member on the side of the body when worn in the thickness direction, the surface member includes a surface sheet and an intermediate sheet that is disposed closer to the absorbent member than the surface sheet in the thickness direction, the surface sheet has a first concave section along a first direction, the intermediate sheet has a second concave section along a second direction that intersects the first direction, and the surface sheet and the intermediate sheet are joined at positions where the first concave section and the second concave section intersect each other.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: November 26, 2013
    Assignee: Uni-Charm Corporation
    Inventors: Kazuya Nishitani, Masashi Kitagawa
  • Patent number: 8574209
    Abstract: An absorbent article includes liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber sandwiched between the top sheet and back sheet, wherein the top sheet is composed of a nonwoven fabric, and the region of the top sheet that contacts the site of discharge is the low density section of the nonwoven fabric with a lower apparent density than the other regions of the top sheet. The thickness of the low density section of the top sheet is larger than the thickness of the sections other than the low density section of the top sheet, and the basis weight of the low density section of the top sheet is equal to the basis weight of the sections other than the low density section of the top sheet.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: November 5, 2013
    Assignee: Unicharm Corporation
    Inventors: Kazuya Nishitani, Minako Sagisaka
  • Publication number: 20130267926
    Abstract: To provide an absorbent article that can further reduce leakage of body fluid from an end portion in a longitudinal direction. An elongated shaped absorbent article includes: a top sheet that has a skin contacting surface; a back sheet; and an absorbent core that is disposed between the top sheet and the back sheet, in which a compressed groove is formed on the skin contacting surface; the skin contacting surface has an excretory contact region, a front region, and a rear region; the compressed groove has a pair of first central grooves and a first circular groove that is provided in at least any one of the front region and the rear region; and the first circular groove is arranged at a position overlapping a vertical center line.
    Type: Application
    Filed: August 30, 2011
    Publication date: October 10, 2013
    Applicant: UNI-CHARM CORPORATION
    Inventors: Katsuhiro Uematsu, Quing Cao, Yukihiro Ito, Hiroyuki Harada, Kazuya Nishitani
  • Publication number: 20130248398
    Abstract: A continuous packing product of an absorbent article has a plurality of packing bodies are continuous with the absorbent article being packed by means of an exterior sheet and the exterior sheet has: a first resin layer which is formed of a thermoplastic resin, and a second resin layer which is formed of a thermoplastic resin with a melting point higher than that of the thermoplastic resin forming the first resin layer. A bonded region configured to partition the packing unit by means of thermal bonding is formed on the exterior sheet. The second resin layer is laminated on the first resin layer in at least the bonded region and the thermoplastic resin configuring the second resin layer is soluble in a solvent.
    Type: Application
    Filed: September 28, 2011
    Publication date: September 26, 2013
    Applicant: UNICHARM CORPORATION
    Inventors: Hiroyuki Harada, Ryuji Okano, Yusuke Kosako, Kazuya Nishitani
  • Patent number: 8450557
    Abstract: The top sheet for an absorbent article has a plurality of fused compressed sections, wherein the fused compressed sections are located on the lowermost side in the thickness direction of the top sheet, and the back side of the top sheet has recesses or low density regions having the lowest density within the top sheet, surrounding the fused compressed sections. The top sheet for an absorbent article having a plurality of fused compressed sections can be produced by a process wherein a top sheet is situated between a member with multiple protrusions and a member with multiple recesses that engage with the multiple protrusions, and the protrusions are pressed into the recesses.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 28, 2013
    Assignee: Unicharm Corporation
    Inventors: Kazuya Nishitani, Minako Sagisaka, Kenji Oba, Keijiro Yokoe
  • Publication number: 20120095425
    Abstract: An absorbent article includes a first curved portion and a second curved portion formed on the surface of a topsheet along a longitudinal direction of the absorbent article. The first curved portion is arranged in one pair to be symmetrical to a centerline of the absorbent article in a region in which the contact region is included, the region being an inside region more than each side part in a widthwise direction of the absorbent article, and is formed along a longitudinal direction of the absorbent article. The second curved portion is arranged in one pair in a region in which the contact region is included, the region being an inside region in the widthwise direction of the absorbent article more than the first curved portion, and is formed along the longitudinal direction of the absorbent article. The first curved portion and the second curved portion has a convex shape outward in the widthwise direction of the absorbent article, in the region in which the contact region is included.
    Type: Application
    Filed: April 7, 2010
    Publication date: April 19, 2012
    Applicant: UNICHARM CORPORATION
    Inventors: Kazuya Nishitani, Toshihisa Hayashi, Minako Sagisaka
  • Publication number: 20120035566
    Abstract: An absorbent article includes a pair of grooves in which each of the grooves has a central region in the longitudinal direction has a first section which is formed so as to be curved in a convex manner at an inside of a widthwise direction of the absorption layer; a second section and a third section which is linked with each end of the first section and is formed so as to be curved in a convex manner at an outside of the widthwise direction. A radius of curvature of the first section is smaller than the radius of curvature of either the second section or the third section.
    Type: Application
    Filed: September 11, 2009
    Publication date: February 9, 2012
    Applicant: UNICHARM CORPORATION
    Inventors: Minako Sagisaka, Saori Okada, Kazuya Nishitani, Toshihisa Hayashi
  • Publication number: 20110130737
    Abstract: An absorbent article includes at least a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet. The absorber includes an absorbing layer center part and an absorbing part formed in the periphery of the absorbing layer center part. On the skin-contact surface side of the absorbent article, compressed grooves are at least symmetry with respect to the longitudinal centerline and surround the absorbing layer center part. The compressed grooves have a pair of right and left intermittent portions across the longitudinal centerline. On the skin-non-contact surface side of the absorber, a space part being nearly convex toward the skin-contact surface side and formed between the absorber and the liquid-impermeable sheet, is present in the side part of at least a part of a compressed groove out of the compressed grooves provided along widthwise right and left side edges.
    Type: Application
    Filed: April 7, 2009
    Publication date: June 2, 2011
    Applicant: UNICHARM CORPORATION
    Inventors: Minako Sagisaka, Kazuya Nishitani
  • Publication number: 20110125120
    Abstract: An absorbent article includes liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber sandwiched between the top sheet and back sheet, wherein the top sheet is composed of a nonwoven fabric, and the region of the top sheet that contacts the site of discharge is the low density section of the nonwoven fabric with a lower apparent density than the other regions of the top sheet. The thickness of the low density section of the top sheet is larger than the thickness of the sections other than the low density section of the top sheet, and the basis weight of the low density section of the top sheet is equal to the basis weight of the sections other than the low density section of the top sheet.
    Type: Application
    Filed: April 8, 2009
    Publication date: May 26, 2011
    Applicant: UNICHARM CORPORATION
    Inventors: Kazuya Nishitani, Minako Sagisaka
  • Publication number: 20110118691
    Abstract: The top sheet for an absorbent article has a plurality of fused compressed sections, wherein the fused compressed sections are located on the lowermost side in the thickness direction of the top sheet, and the back side of the top sheet has recesses or low density regions having the lowest density within the top sheet, surrounding the fused compressed sections. The top sheet for an absorbent article having a plurality of fused compressed sections can be produced by a process wherein a top sheet is situated between a member with multiple protrusions and a member with multiple recesses that engage with the multiple protrusions, and the protrusions are pressed into the recesses.
    Type: Application
    Filed: April 9, 2009
    Publication date: May 19, 2011
    Applicant: UNICHARM CORPORATION
    Inventors: Kazuya Nishitani, Minako Sagisaka, Kenji Oba, Keijiro Yokoe
  • Publication number: 20110092944
    Abstract: An absorbent article includes a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber sandwiched between the liquid-permeable sheet and the liquid-impermeable sheet. The absorber includes an absorbing layer center part and an absorbing part formed in the periphery of the absorbing layer center part. On the skin-contact surface side of the absorbent article, compressed grooves are provided along at least widthwise right and left side edges to surround the absorbing layer center part, and have an intermittent portion in the vicinity of the longitudinal centerline. On the skin-non-contact surface side of the absorber, a space part being nearly convex toward the skin-contact surface side and formed between the absorber and the liquid-impermeable sheet, is present in the side part of at least a part of compressed groove out of the compressed grooves provided along widthwise right and left side edges.
    Type: Application
    Filed: April 7, 2009
    Publication date: April 21, 2011
    Applicant: UNICHARM CORPORATION
    Inventors: Minako Sagisaka, Kazuya Nishitani
  • Patent number: 7744578
    Abstract: An absorbent article having leakage preventing walls that longitudinally exert an elastic contractive force to bend a main body. Each leakage preventing wall is provided, between front and rear ends, with a constraint portion so as to locally constrain an allowable rising height of the leakage preventing wall. Thus, the leakage preventing wall takes a shape that can easily conform to a curved surface of the wearer's body.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 29, 2010
    Assignee: Uni-Charm Corporation
    Inventors: Toshiyuki Tanio, Masataka Kinoshita, Kazuya Nishitani, Noritatsu Tamagawa
  • Patent number: 7727212
    Abstract: An absorbent article worn in the groin area, in which, when a compressive force is received from a lateral direction, a main absorbent region can oppose an excretion area of a wearer's body without twists or wrinkles occurring, and when the compressive force is relaxed, the article easily recovers to its original shape. An absorbent body provided in the absorbent article has a main absorbent region, reinforcing regions, and buffer regions. The bending stiffness of the reinforcing regions and the main absorbent region is larger than that of the buffer regions. When compressive force is received from a wearer's thigh areas in the lateral direction, the reinforcing regions that are positioned to the left and right deform in a curved shape, and the buffer regions that are to the left and right are compressed. The main absorbent region does not easily deform, and maintains a tight fit.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: June 1, 2010
    Assignee: Uni-Charm Corporation
    Inventors: Akane Sakai, Wataru Yoshimasa, Kazuya Nishitani, Satoshi Mizutani
  • Patent number: 7708725
    Abstract: A sanitary napkin that is provided with large rear flaps to effectively prevent liquid from leaking obliquely rearward. The rear flaps are disposed rearward of fold-back flaps to be wrapped around a crotch part of an undergarment. The rear flap is of a shape spreading rearwardly from a starting point. With a pressure from the thighs acting forward of the starting point, leakage preventing walls forward of the starting point can be maintained in a rising state during wear. On the other hand, the leakage preventing walls rearward of the starting point may possibly fall outward. However, even if the leakage preventing walls fall outward rearward of the starting point, they will never project out of the rear flaps. Accordingly, they hardly leave a stain on an undergarment.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: May 4, 2010
    Assignee: Uni-Sharm Corporation
    Inventors: Noritatsu Tamagawa, Masataka Kinoshita, Kazuya Nishitani, Toshiyuki Tanio
  • Publication number: 20100010464
    Abstract: There is provided an absorbent article having a surface member joined in consideration of absorptivity. The absorbent article has a longitudinal direction, a width direction, and a thickness direction and is worn on a body. The absorbent article includes: an absorbent member for absorbing fluid; and a fluid-permeable surface member, wherein the surface member covers the absorbent member on the side of the body when worn in the thickness direction, the surface member includes a surface sheet and an intermediate sheet that is disposed closer to the absorbent member than the surface sheet in the thickness direction, the surface sheet has a first concave section along a first direction, the intermediate sheet has a second concave section along a second direction that intersects the first direction, and the surface sheet and the intermediate sheet are joined at positions where the first concave section and the second concave section intersect each other.
    Type: Application
    Filed: November 21, 2007
    Publication date: January 14, 2010
    Applicant: UNI-CHARM CORPORATION
    Inventors: Kazuya Nishitani, Masashi Kitagawa
  • Patent number: 7625363
    Abstract: Disclosed is an absorbent article having a center absorbent element on a backsheet. The center absorbent element has a center absorbent sheet covered with a center topsheet. The center absorbent sheet is formed with a plurality of projections, wherein longitudinal guide grooves are defined between transversely adjacent projections, transverse guide grooves are defined between longitudinally adjacent projections for communication between the longitudinal guide grooves. The longitudinal guide grooves are dimensioned to extend over at least two projections aligned in the longitudinal direction.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: December 1, 2009
    Assignee: Uni-Charm Corporation
    Inventors: Wataru Yoshimasa, Noritatsu Tamagawa, Kazuya Nishitani
  • Patent number: 7462174
    Abstract: A sanitary napkin has leakage preventing walls on a skin-side surface of a main body. The leakage preventing wall has a skin-contacting portion, of which an inner edge is fixed at an inner edge's front end and an outer edge is fixed at an outer edge's front end located forward of the inner edge's front end. Therefore, when the leakage preventing wall is in a rising position, the skin-contacting portion is inclined with the outer edge closer to the wearer's body than the inner edge. Accordingly, the skin-contacting portion can easily conform to the wearer's crotch on both sides of the vaginal opening.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: December 9, 2008
    Assignee: Uni-Charm Corporation
    Inventors: Kazuya Nishitani, Toshiyuki Tanio, Masataka Kinoshita, Akane Sakai
  • Patent number: 7335810
    Abstract: Disclosed is an absorbent article including: a liquid-permeable topsheet; a backsheet; an absorbent storage layer between the topsheet and the backsheet; and a cushion layer between the topsheet and the absorbent storage layer. When a tensile force of 490 mN per 25 mm width is applied to the topsheet in a transverse direction crossing the cushion layer, an extension is at least 30%. When the absorbent article is pressed from above in a region having the cushion layer, an initial thickness T0 of the pressed region of the absorbent article for a pressure of 49 Pa is at least 10 mm, a compressive hardness (LC value) is 0.5 to 0.65, and a compressive recovery (RC value) is at least 35%.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: February 26, 2008
    Assignee: Uni-Charm Corporation
    Inventors: Wataru Yoshimasa, Kazuya Nishitani