Patents by Inventor Mitsuko Uchiyama

Mitsuko Uchiyama 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: 6840926
    Abstract: A multi-layer feminine hygienic pad comprising a laminate of two or more composite absorption sheets in which an upper composite absorption sheet which comprises an upper backing sheet laminated to a back side thereof is laid on top of a lower composite absorption sheet comprising a lower backing sheet laminated to a back side thereof such that the back side of the upper composite absorption sheet is placed downward and peripheral parts of the lower backing sheet and the upper backing sheet are temporarily attached together by a high pressure pressing without using an adhesive and, a back side of a lowest backing sheet of a lowest composite absorption sheet is capable of being attachable to underwear. The composite absorption sheet and the backing sheet are approximately the same size.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: January 11, 2005
    Inventors: Mica Nukina, Mitsuru Uchiyama, Mitsuko Uchiyama, Mitsuo Ohtani, Atsushi Uchiyama
  • Patent number: 6730067
    Abstract: A multi-layer feminine hygienic pad comprising: a laminate of two or more composite absorption sheets in which an upper composite absorption sheet comprising a sheet of a fluid-absorbing material and an upper backing sheet laminated to the lower side of the sheet of a fluid-absorbing material is laid on top of a lower composite absorption sheet comprising a sheet of a fluid-absorbing material and a lower backing sheet which has a dimension larger than the dimension of the sheet of a fluid-absorbing material and is laminated to the lower side of the sheet of a fluid-absorbing material, and peripheral part of the lower backing sheet outside the area of the sheet of a fluid-absorbing material of the lower composite absorption sheet and peripheral part of the upper backing sheet of the upper composite absorption sheet are temporarily attached together at least at two opposite edges of the peripheral parts; and a release film coated with a pressure-sensitive adhesive and attached to the lower side of a backing she
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 4, 2004
    Assignee: Mica Nukina
    Inventors: Mica Nukina, Mitsuru Uchiyama, Mitsuko Uchiyama, Mitsuo Ohtani, Atsushi Uchiyama
  • Publication number: 20030009142
    Abstract: A multi-layer feminine hygienic pad comprising a laminate of two or more composite absorption sheets in which an upper composite absorption sheet comprising an upper backing sheet laminated to a back side thereof is laid on top of a lower composite absorption sheet comprising a lower backing sheet laminated to a back side thereof such that the back side of the upper composite absorption sheet is placed downward and peripheral parts of the lower backing sheet and the upper backing sheet are temporarily attached together by a high pressure pressing and, a back side of a lowest backing sheet of a lowest composite absorption sheet is attachable to underwear. The feminine hygienic pad does not require a woman to carry along a number of pads as replacements. The previous troublesome handling to fix the pad to a desired position of underwear is reduced to once with a plurality of composite absorption sheets.
    Type: Application
    Filed: August 14, 2002
    Publication date: January 9, 2003
    Applicant: Mica NUKINA
    Inventors: Mica Nukina, Mitsuru Uchiyama, Mitsuko Uchiyama, Mitsuo Ohtani, Atsushi Uchiyama
  • Patent number: 6171425
    Abstract: A process for continuously producing a multi-layer feminine hygienic pad comprising a plurality of long sheets of a thermoplastic resin as a backing sheet, a plurality of long sheets of a porous film of a thermoplastic resin, and a plurality of sheets of a fluid-absorbing macromolecular compound.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: January 9, 2001
    Inventors: Mica Nukina, Mitsuru Uchiyama, Mitsuko Uchiyama, Mitsuo Ohtani, Atsushi Uchiyama