Patents by Inventor Toshihiro Shirase

Toshihiro Shirase 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).

  • Moisture-permeable disposable diapers
    Patent number: 4306559
    Abstract: A disposable diaper comprising a urine-permeable surface sheet, a urine-impervious backing sheet and an absorbent pad interposed between said two sheets, said disposable diaper being characterized in that the urine-impervious backing sheet comprises at least two layers, the first layer being a substantially urine-impermeable, vapor-permeable sheet, and the second layer being a urine-impermeable sheet which is perforated at an aperture ratio lower than 30%, said first and second layer being integrally formed.
    Type: Grant
    Filed: February 27, 1980
    Date of Patent: December 22, 1981
    Assignee: Kao Soap Company, Ltd.
    Inventors: Kazunori Nishizawa, Toshihiro Shirase, Hiroshi Mizutani