Patents by Inventor Harumitsu Toyoda

Harumitsu Toyoda 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: 20020177836
    Abstract: A shorts-type disposable diaper including a liquid permeable topsheet, a liquid impermeable backsheet, and an absorber interposed between the topsheet and the backsheet, front and rear waist portions being connected together at opposite sides thereof, respectively, the improvement including a tape fastener adapted to fasten the diaper when the diaper is to be discarded, the tape fastener being disposed at a central outer surface section of the backsheet and extending in a longitudinal direction of the backsheet.
    Type: Application
    Filed: July 17, 2002
    Publication date: November 28, 2002
    Applicant: Kao Corporation
    Inventors: Toru Hayase, Harumitsu Toyoda, Haruko Kawaguchi
  • Patent number: 6451000
    Abstract: A short-type disposable diaper including a liquid permeable topsheet, a liquid impermeable backsheet, and an absorber interposed between the topsheet and the backsheet, front and rear waist portions being connected together at opposite sides thereof, respectively, the improvement including a tape fastener adapted to fasten the diaper when the diaper is to be discarded, the tape fastener being disposed at a central outer surface section of the backsheet and extending in a longitudinal direction of the backsheet.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: September 17, 2002
    Assignee: Kao Corporation
    Inventors: Toru Hayase, Harumitsu Toyoda, Haruko Kawaguchi
  • Publication number: 20020058920
    Abstract: A disposable diaper according to the present invention includes a liquid permeable top sheet, a liquid impermeable back sheet, and a liquid retentive absorbent member interposed between the top sheet and the back sheet, and having a pair of inner sheets which are connected to the back sheet and are provided at opposite longitudinal side portions of the disposable diaper on its top sheet side such that the longitudinal inner side edges of the inner sheets are located inwardly along the longitudinal side edges of the absorbent member. Each of the inner sheets includes a laminate of a non-woven fabric and a film, and each inner sheet is arranged such that the non-woven fabric is located on the skin-contacting surface side of the diaper, and wherein the back sheet includes a laminate of non-woven fabric and a film. The back sheet is arranged such that the non-woven fabric is located on the outer skin-noncontacting surface side of the laminate.
    Type: Application
    Filed: February 8, 2000
    Publication date: May 16, 2002
    Inventors: Harumitsu Toyoda, Haruko Toyoshima, Jun Sasaki
  • Patent number: 6306122
    Abstract: A disposable wearing article including a liquid-permeable topsheet, an outermost layer sheet located on an outer surface of the disposable wearing article, and a liquid retentive absorbent member, a waist-surrounding elastic member being arranged at a waist-surrounding portion, wherein the waist-surrounding elastic member is fixed to other members than the outermost layer sheet in an expanded state to thereby form gathers inwardly of the outermost layer sheet, a non-bonding area is provided between the waist-surrounding elastic member and the outermost layer sheet, and no gathers are formed on an outer surface of the waist-surrounding portion.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: October 23, 2001
    Assignee: Kao Corporation
    Inventors: Mika Narawa, Yoshinobu Machida, Shinobu Takei, Harumitsu Toyoda, Ken Nemoto
  • Patent number: 6264643
    Abstract: A shorts type disposable diaper includes a body having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent member interposed between the topsheet and the backsheet. The body includes a stomach-side portion which is located on the stomach side of a diaper wearer when the diaper is worn, a back-side portion which is located on the back side of the wearer when the diaper is worn, and a crotch portion which is located between the stomach-side portion and the back-side portion. The body has a pair of first expansible side panels, each of the first expansible side panels being affixed to each longitudinal side of the stomach-side portion and a pair of second expansible side panels, each of the second expansible side panels being affixed to each longitudinal side of the back-side portion.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: July 24, 2001
    Assignee: Kao Corporation
    Inventor: Harumitsu Toyoda
  • Patent number: 6120486
    Abstract: A disposable diaper according to the present invention includes a liquid permeable top sheet, a liquid impermeable back sheet, and a liquid retentive absorbent member interposed between the top sheet and the back sheet, and having a pair of inner sheets which are connected to the back sheet and are provided at opposite longitudinal side portions of the disposable diaper on its top sheet side such that the longitudinal inner side edges of the inner sheets are located inwardly along the longitudinal side edges of the absorbent member. Each of the inner sheets includes a laminate of a non-woven fabric and a film, and each inner sheet is arranged such that the non-woven fabric is located on the skin-contacting surface side of the diaper, and wherein the back sheet includes a laminate of non-woven fabric and a film. The back sheet is arranged such that the non-woven fabric is located on the outer skin-noncontacting surface side of the laminate.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: September 19, 2000
    Assignee: Kao Corporation
    Inventors: Harumitsu Toyoda, Haruko Toyoshima, Jun Sasaki
  • Patent number: 6007527
    Abstract: A disposable diaper including a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent member interposed therebetween, the disposable diaper being provided with a front waist body portion which is located on the stomach side of a diaper wearer when the wearer puts on the diaper and a rear waist body portion which is located on the back side of the wearer, the rear waist body portion being provided with tape tabs connected at opposite lateral sides thereof, respectively, each of the tape tabs being provided with a projection member or a recess member of a mechanical fastener, the front waist body portion being provided with a counterpart portion on the backsheet side for allowing the projection member or the recess member to be engaged with or be retained by the counterpart portion;each of the tape tabs including an adhesive portion which is formed by applying an adhesive agent thereto;the adhesive portion being provided on the surface side of the tape tab opposite to where the projection
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: December 28, 1999
    Assignee: Kao Corporation
    Inventors: Haruko Kawaguchi, Megumi Kato, Harumitsu Toyoda, Taiki Uchiyama
  • Patent number: 5916207
    Abstract: A disposable diaper includes a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent member interposed between the topsheet and backsheet. When worn, the diaper forms a front waist body portion, a rear waist body portion, and a crotch portion. The rear waist body portion has at each side, a fastening tape which is designed to reveal elasticity on being pulled in the longitudinal direction of the fastening tape.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: June 29, 1999
    Assignee: KAO Corporation
    Inventors: Harumitsu Toyoda, Fumiaki Kikuchi
  • Patent number: 5836931
    Abstract: A shorts type disposable diaper includes an absorptive body having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorber interposed between the topsheet and the backsheet. The absorptive body is divided into a stomach side portion, an under-crotch portion, and a back side portion, substantially continuous elastically expansible members being disposed over entire peripheral edge portions of a waist opening and a pair of leg openings which are formed by fixedly connecting confronting opposite side portions between the stomach side portion and the back side portion. The absorber is 8 mm or less in thickness and 100 mm or more in width in the under-crotch portion, and the distance from a side edge of the under-crotch portion of the absorber to the elastically expansible members disposed in the leg opening is 15 mm or more.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: November 17, 1998
    Assignee: Kao Corporation
    Inventors: Harumitsu Toyoda, Kazuhiro Tagawa, Yoshinobu Machida, Kenji Ando, Haruko Kawaguchi
  • Patent number: 5817087
    Abstract: A shorts type disposable diaper comprising an absorbent body which comprises a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent member interposed between the topsheet and the backsheet, the absorbent body having a front waist body portion located on the stomach side of a diaper wearer when the diaper is worn and a rear waist body portion located on the back side of the wearer, the front and rear waist body portions being joined and sealed together at opposing lateral side edges thereof to form a waist opening portion and a pair of leg opening portions, characterized in that the topsheet and/or the backsheet have a mechanical strength of about 1,500 gf/50 mm or more in the longitudinal direction of the diaper.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: October 6, 1998
    Assignee: Kao Corporation
    Inventors: Keima Takabayashi, Shinobu Takei, Harumitsu Toyoda
  • Patent number: 5807371
    Abstract: An extensible fastening tape includes a base part, adapted to be attached to a disposable absorbent article, and an extensible part attached to the base part, the extensible part being extendable under load of containing the disposable absorbent article.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: September 15, 1998
    Assignee: Kao Corporation
    Inventors: Harumitsu Toyoda, Shinobu Takei
  • Patent number: 5735839
    Abstract: The shorts type disposable diaper (1) of the present invention is characterized by a plurality of elastic members (4) provided at the urination point (40) located below the body-surrounding portion (30) and in the vicinity of the urination portion of the wearer, thereby forming continuous gathers in the width direction of the diaper. The shorts type disposable diaper (1) is also characterized by a plurality of elastic members (31) provided at the body-surrounding portion (30) in such a manner that the interval of the elastic members (31) becomes narrower towards the waist opening portion (10) and that the elongation of the elastic members (31) increases towards the waist opening portion (10).
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: April 7, 1998
    Assignee: Kao Corporation
    Inventors: Haruko Kawaguchi, Masao Kurahashi, Harumitsu Toyoda
  • Patent number: 5425726
    Abstract: An absorbent article such as a disposable diaper, effective to prevent liquid from leaking, comprises a liquid-impermeable back sheet, a liquid-permeable top sheet, an absorbent provided between the back sheet and the top sheet and a liquid-permeable surface sheet fixed on the top sheet at both ends of the surface sheet at the longitudinal direction of the article, but not fixed thereto at the intermediate part.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: June 20, 1995
    Assignee: Kao Corporation
    Inventors: Shiggeyuki Shimizu, Harumitsu Toyoda, Masamichi Senoo, Keiji Abe
  • Patent number: 5188626
    Abstract: A disposable diaper having a liquid pervious top-sheet, a liquid impervious and vapor pervious backsheet and an absorbent core interposed between the topsheet and the backsheet comprising interposing liquid impervious and vapor pervious barrier sheets between the topsheet and the backsheet, said barrier sheets being extended from the front edge and the rear edge of the diaper to the inwards of the front edge and the rear edge of the absorbent core respectively, to thereby form waist barrier parts covering the front edge and the rear edge of the absorbent core, and the barrier sheets being so formed that the intensity in the lateral direction of the diaper is higher than the intensity in the longitudinal direction of the diaper.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: February 23, 1993
    Assignee: Kao Corporation
    Inventors: Harumitsu Toyoda, Masamichi Senoo, Keiji Abe