Patents by Inventor Hisashi Takai

Hisashi Takai 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: 6705189
    Abstract: A flexible composite sheet that includes a fibrous assembly and a plurality of narrow film strips bonded to upper surface of the fibrous assembly. The narrow strips are intermittently arranged so that the fibrous assembly may be exposed between each pair of the adjacent narrow strips. Sides defining each of the narrow strips are formed with tooth-like portions.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: March 16, 2004
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Miou Suzuki
  • Patent number: 6699564
    Abstract: A topsheet for a disposable absorbent article including a first plastic film layer, a second plastic film layer and a fibrous assembly layer disposed between these two layers. The first plastic film layer includes a plurality of first plane regions spaced one from another and extending in parallel one to another in one direction and the second plastic film layer includes a plurality of second plane regions spaced one from another and extending in parallel one to another in the one direction. Of the first and second plane regions, at least the first plane regions are formed with bridge-like regions and first rising regions.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: March 2, 2004
    Assignee: Uni-Charm Corporation
    Inventors: Takayuki Hisanaka, Hisashi Takai
  • Publication number: 20040013847
    Abstract: A water-absorbent structure comprises an assembly of thermoplastic synthetic fibers, cellulose-based fibers, super-absorbent polymer and water-pervious sheets wrapping these components together. The assembly is a honeycomb construction having a plurality of through-holes and normally in a compressed state. Upon water permeation into the water-absorbent structure, the super-absorbent polymer is swollen and softened and the assembly is swollen so that the through-holes restore the initial state before the assembly has been compressed.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 22, 2004
    Inventors: Masashi Nakashita, Hisashi Takai
  • Patent number: 6673204
    Abstract: Disclosed are a method and an apparatus for manufacturing a non-woven fabric, in which a predetermined pattern of a forming body is transferred to a non-woven fabric immediately after or simultaneously with its formation by urging the non-woven fabric onto the forming body with water jets.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 6, 2004
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Kazuya Okada, Takayoshi Konishi
  • Patent number: 6613414
    Abstract: A composite sheet comprises a hydrophobic first plastic film layer forming an upper surface of the sheet, a second plastic film layer forming a lower surface of the sheet and a hydrophobic intermediate fibrous assembly layer disposed between these two layers. The first plastic film layer includes a plurality of first plane regions spaced one from another and extending parallel one to another in one direction and sawtooth-shaped first rising regions formed along edges of the first plane regions and the second plastic film layer includes a plurality of second plane regions. Such composite sheet is breathable but liquid-resistant and suitable for use for disposable garments.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: September 2, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Takayuki Hisanaka, Hisashi Takai, Koichi Yamaki
  • Publication number: 20030099821
    Abstract: Disclosed is a water disintegratable sheet including bast/leaf fibers and at least one kind of primary fibers. The bast/leaf fibers have a Canadian Standard freeness value of at most 600 milliliter and occupy 2 to 75% by weight of a total fiber weight of the sheet.
    Type: Application
    Filed: October 8, 2002
    Publication date: May 29, 2003
    Applicant: Uni-Charm Corporation
    Inventors: Hisashi Takai, Kazuya Okada, Takayoshi Konishi
  • Publication number: 20030100240
    Abstract: Disclosed is a water disintegratable sheet of which fibers are hydroentangled about each other. The water disintegratable sheet includes: at least one kind of primary fibers having a fiber length of at most 10 millimeter; and bast/leaf fibers having a Canadian Standard freeness value of at most 600 milliliter and a fiber length of at most 10 millimeter.
    Type: Application
    Filed: October 8, 2002
    Publication date: May 29, 2003
    Applicant: Uni-Charm Corporation
    Inventors: Hisashi Takai, Kazuya Okada, Takayoshi Konishi
  • Publication number: 20030073364
    Abstract: A composite sheet comprises a hydrophobic first plastic film layer forming an upper surface of the sheet, a second plastic film layer forming a lower surface of the sheet and a hydrophobic intermediate fibrous assembly layer disposed between these two layers. The first plastic film layer includes a plurality of first plane regions spaced one from another and extending parallel one to another in one direction and sawtooth-shaped first rising regions formed along edges of the first plane regions and the second plastic film layer includes a plurality of second plane regions. Such composite sheet is breathable but liquid-resistant and suitable for use for disposable garments.
    Type: Application
    Filed: November 18, 2002
    Publication date: April 17, 2003
    Inventors: Takayuki Hisanaka, Hisashi Takai, Koichi Yamaki
  • Publication number: 20030068467
    Abstract: A flexible composite sheet includes a fibrous assembly and a plurality of narrow film strips bonded to upper surface of the fibrous assembly. The narrow strips are intermittently arranged so that the fibrous assembly may be exposed between each pair of the adjacent narrow strips. Sides defining each of the narrow strips are formed with tooth-like portions.
    Type: Application
    Filed: November 18, 2002
    Publication date: April 10, 2003
    Inventors: Hisashi Takai, Miou Suzuki
  • Publication number: 20030068952
    Abstract: A topsheet for a disposable absorbent article including a first plastic film layer, a second plastic film layer and a fibrous assembly layer disposed between these two layers. The first plastic film layer includes a plurality of first plane regions spaced one from another and extending in parallel one to another in one direction and the second plastic film layer includes a plurality of second plane regions spaced one from another and extending in parallel one to another in the one direction. Of the first and second plane regions, at least the first plane regions are formed with bridge-like regions and first rising regions.
    Type: Application
    Filed: November 18, 2002
    Publication date: April 10, 2003
    Inventors: Takayuki Hisanaka, Hisashi Takai
  • Patent number: 6544625
    Abstract: A flexible sheet for disposable sanitary article includes a plurality of aperture-arrays each having a plurality of apertures, a plurality of plane regions arranged so that each pair of the adjacent plane regions have one of the aperture-arrays therebetween and a plurality of regions rising on the plane regions along their peripheral edges surrounding the respective apertures to form irregular undulations. The rising regions each defining on both sides, trough regions having a depth of at least 0.01 mm which are distributed over the flexible sheet at a density of at least 500/cm2.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: April 8, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Takayuki Hisanaka, Koichi Yamaki, Miou Suzuki, Hisashi Takai
  • Patent number: 6530091
    Abstract: Support for attaching an absorbent article such as a sanitary napkin to an undergarment and disposed between a sanitary napkin and an inner surface of a crotch region of the undergarment. The support is formed by a first sheet and a second sheet overlying the first sheet. The first sheet 6 is elastically flexible and stretchable in its longitudinal direction and the second sheet has its longitudinally opposite end portions bonded to longitudinally opposite end portions of the first sheet and elastically stretchable at least in the longitudinal direction. The inner surface of the second sheet is formed so that the outer surface of the napkin may be fixed thereon.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: March 11, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Miou Suzuki, Kaori Yamauchi, Maki Watanabe, Sachiyo Suzuki
  • Patent number: 6517925
    Abstract: A topsheet for a disposable absorbent article that includes a first plastic film layer, a second plastic film layer and a fibrous assembly layer disposed between these two layers. The first plastic film layer includes a plurality of first plane regions spaced apart from one another that extend parallel to one another in one direction and the second plastic film layer includes a plurality of second plane regions spaced apart from one another that extend parallel to one another in the one direction. Of the first and second plane regions, at least the first plane regions are formed with bridge-like regions and first rising regions.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: February 11, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Takayuki Hisanaka, Hisashi Takai
  • Patent number: 6517927
    Abstract: A composite sheet that includes a sheet-like fibrous assembly and a plurality of thermoplastic synthetic resin lamellae. Each of the film layer is formed on its upper surface with a plurality of grooves extending from one side edge to the other side edge of the film layer.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: February 11, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Miou Suzuki
  • Patent number: 6506473
    Abstract: A topsheet for a disposable absorbent article that includes a first hydrophobic plastic film layer, a second hydrophobic plastic film layer and hydrophobic thermoplastic synthetic fibrous layer disposed between the two layers. The first hydrophobic plastic film layer includes a plurality of first plane regions spaced apart from one another that extend parallel to one another in one direction and the second hydrophobic plastic first layer includes a plurality of second plane regions spaced apart from one another that extend parallel to one another in the one direction. Of the first and second plane regions, at least the first plane regions are formed with bridge regions and first rising regions.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: January 14, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Takayuki Hisanaka, Hisashi Takai, Koichi Yamaki
  • Patent number: 6503597
    Abstract: A flexible composite sheet that includes a fibrous assembly and a plurality of narrow film strips bonded to upper surface of the fibrous assembly. The narrow strips are intermittently arranged so that the fibrous assembly may be exposed between each pair of the adjacent narrow strips. Sides defining each of the narrow strips are formed with tooth-like portions.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: January 7, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Miou Suzuki
  • Publication number: 20030000665
    Abstract: Disclosed is a water-disintegratable sheet including water-dispersible fibers and microfibrillated cellulose. The water-dispersible fibers are hydroentangled about each other to provide high fiber density regions and low fiber density regions. The hydroentangled water-dispersible fibers are bonded to each other through a hydrogen bonding power of the microfibrillated cellulose.
    Type: Application
    Filed: May 10, 2002
    Publication date: January 2, 2003
    Applicant: UNI-CHARM CORPORATION
    Inventors: Hisashi Takai, Takayoshi Konishi
  • Patent number: 6479130
    Abstract: A flexible sheet for a disposable garment includes a plastic sheet and a fibrous assembly joined to a lower surface of the plastic sheet, the plastic sheet includes a plurality of flat zones, a plurality of slit zones, bridge zones across the slit zones and rising zones rising on the upper surface of the plastic sheet repeating rise and fall substantially in saw-tooth-shape, and component fibers of the fibrous assembly partially extend upward in the slit zones.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: November 12, 2002
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Takayuki Hisanaka, Koichi Yamaki
  • Patent number: 6468626
    Abstract: A flexible sheet 1 includes a plastic sheet and a fibrous assembly bonded to the lower surface of the sheet. The sheet is formed with projections, ribbon-shaped regions, fine slits defined between each pair of adjacent ribbon-shaped regions, bridge-like regions connecting each pair of adjacent ribbon-shaped regions and rising regions extending upward from edges of the ribbon-shaped regions. The fibrous assembly are partially exposed within the respective fine slits.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: October 22, 2002
    Assignee: Uni-Charm Corporation
    Inventors: Hisashi Takai, Miou Suzuki
  • Publication number: 20020100153
    Abstract: Disclosed are a method and an apparatus for manufacturing a non-woven fabric, in which a predetermined pattern of a forming body is transferred to a non-woven fabric immediately after or simultaneously with its formation by urging the non-woven fabric onto the forming body with water jets.
    Type: Application
    Filed: November 16, 2001
    Publication date: August 1, 2002
    Applicant: Uni-Charm Corporation
    Inventors: Hisashi Takai, Kazuya Okada, Takayoshi Konishi