Patents by Inventor Norihiko Ishikawa

Norihiko Ishikawa 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: 9452091
    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: August 4, 2010
    Date of Patent: September 27, 2016
    Assignee: Uni-Charm Corporation
    Inventors: Hirotomo Mukai, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • Patent number: 9445950
    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: August 4, 2010
    Date of Patent: September 20, 2016
    Assignee: Uni-Charm Corporation
    Inventors: Hirotomo Mukai, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • 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: 20100324523
    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: Application
    Filed: August 4, 2010
    Publication date: December 23, 2010
    Applicant: Uni-Charm Corporation
    Inventors: Hirotomo MUKAI, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • Publication number: 20100324521
    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: Application
    Filed: August 4, 2010
    Publication date: December 23, 2010
    Applicant: Uni-Charm Corporation
    Inventors: Hirotomo MUKAI, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • Publication number: 20080140042
    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: Application
    Filed: December 7, 2007
    Publication date: June 12, 2008
    Applicant: Uni-Charm Corporation
    Inventors: Hirotomo Mukai, Akiyoshi Kinoshita, Tomoko Tsuji, Norihiko Ishikawa, Tatsuya Hashimoto
  • Patent number: 6632206
    Abstract: A disposable diaper is locally formed with a protuberance in a transversely middle zone of the diaper between urethral meatus and anus of a diaper wearer, and the diaper thus formed is capable of preventing loose passage discharged thereon form flowing toward the front side of the wearer.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: October 14, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Kazuaki Onishi, Norihiko Ishikawa, Yoko Yabe
  • Publication number: 20020173762
    Abstract: A body fluid absorbent article includes an absorbent material, which includes a woven fabric or a knitted fabric made of yarns which are composed of super-absorbent polymer and synthetic fibers and/or regenerated fibers united.
    Type: Application
    Filed: May 6, 2002
    Publication date: November 21, 2002
    Inventors: Norihiko Ishikawa, Toshio Inoue, Kozo Abe
  • Patent number: 6458111
    Abstract: A disposable absorbent article including a fecal matter retaining layer, the retaining layer including a three dimensional structure having a thickness of 5˜100 mm adapted to be placed against a wearer's hip is formed with at least one opening having an area of 20˜30000 mm2 and at least one fecal matter retaining cavity having a depth of 2.5 mm.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: October 1, 2002
    Assignee: Uni-Charm Corporation
    Inventors: Kazuaki Onishi, Norihiko Ishikawa, Yoko Yabe
  • Patent number: 6450998
    Abstract: A disposable article for dealing with feces adapted to be used in conjunction with a disposable diaper or diaper cover. The article includes a feces receiving region that is provided in the form of a laminate that includes a top layer provided with at least one opening having an area of 20˜500 mm2, a feces holding layer in the form of a three-dimensional network structure underlying the top layer, a liquid-absorbent layer underlying the holding layer and a liquid-impervious back layer covering a lower surface of the absorbent layer. The laminate has its width progressively reduced toward a front end of the feces receiving pocket and a leakage barrier is formed along transversely opposite side edges of the top layer.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: September 17, 2002
    Assignee: Uni-Charm Corporation
    Inventors: Toshifumi Otsubo, Hiroyuki Tanji, Yoshitaka Mishima, Naomi Suzuki, Kazuaki Onishi, Norihiko Ishikawa, Yoko Yabe
  • Patent number: 6129717
    Abstract: An absorbent article including an inner sheet and first and second outer sheets. The first outer sheet is of a fine interstice while the second outer sheet is fluid permeable. Through crepe processing, a great number of recesses are formed on an absorbent crepe sheet having wrinkles as the inner sheet. Highly absorbent polymers are charged in the recesses. Then, the first outer sheet adheres to the face on the opening side of the recesses of the inner sheet, while the second outer sheet adheres to the face of the opposite side of the inner sheet. The second outer sheet is positioned toward the side of fluid absorption. When a fluid is applied on the absorbent article, the fluid passes through the second outer sheet onto the inner sheet and the highly absorbent polymers. Because the crepe wrinkles are elongated and extended when the inner sheet absorbs fluid, the recesses are enlarged.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: October 10, 2000
    Assignee: Uni-Charm Corporation
    Inventors: Yoshihisa Fujioka, Ichiro Wada, Chimari Fujita, Norihiko Ishikawa
  • Patent number: 5980879
    Abstract: A particulate deodorant resin composition comprising a water-absorbent resin and powdery zeolite dispersed within the resin particles. The composition exhibits the effect of deodorizing the absorbed body fluid while retaining the water-absorbent function inherent in water-absorbent resins. When, therefore, used as sanitary materials such as paper diaper or sanitary goods, it is featured by not only the inherent absorbent effect, but also the deodorant effect.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: November 9, 1999
    Assignee: Uni-Charm Corporation
    Inventors: Ishikawa Hiroki, Norihiko Ishikawa, Naoki Ohba, Shingo Mukaida, Takeru Mori, Kenji Tanaka
  • Patent number: 5827257
    Abstract: A urine-absorbent bag having front and rear sections for covering of the user's penis and an opening for insertion of the user's penis into the bag, the bag being composed of a liquid-permeable inner sheet, a liquid-impermeable outer sheet and a liquid-absorbent core disposed therebetween, the core being formed with grooves in predetermined directions to thereby deform the bag following a shape of the user's penis and allow an absorbing capacity of the core to be fully utilized.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: October 27, 1998
    Assignee: Uni-Charm Corporation
    Inventors: Yoshihisa Fujioka, Norihiko Ishikawa
  • Patent number: 5827250
    Abstract: A urine-absorbent bag has a front section and a rear section adapted to cover a user's penis, defining an opening for insertion of the penis into the bag and a bottom opposed to the opening. The front section has a cut extending from an edge of the opening towards the bag bottom to divide the front section into first and second portions. Fastening members fasten the first and second portions when the portions overlap each other. The rear section has a leakage blocking dam including an elasticized sheet having a base end extending along and bonded to the edge of the opening transversely of the bag and a free end adapted to be raised radially of the opening from the base end.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: October 27, 1998
    Assignee: Uni-Charm Corporation
    Inventors: Yoshihisa Fujioka, Norihiko Ishikawa
  • Patent number: 5735837
    Abstract: A urine-absorbent bag for incontinence having a surrounding wall and an upper peripheral edge defining an opening for insertion of the wearer's penis, the surrounding wall being provided with a cut extending from the upper peripheral edge of the opening toward a bottom edge of the bag so as to divide an upper portion in two, an elastic sheet being attached to the surrounding wall over a region extending in the proximity of the cut.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: April 7, 1998
    Assignee: Uni-Charm Corporation
    Inventor: Norihiko Ishikawa