Patents by Inventor Makoto Ishigami

Makoto Ishigami 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: 4883709
    Abstract: Here are disclosed a composite non-woven fabric having a high dimensional stability and a process for preparing such non-woven fabaric. This non-woven fabric is prepared by a cross-stretching starting non-woven fabric obtained by a fiber entanglement treatment of a staple fiber web by fluid jets to form a substrate, then introducing short fibers onto this cross-stretched substrate and filling said cross-stretched substrate with said short fibers by further fiber entanglement treatment also by fluid jets. Such composite non-woven fabric is suitable particularly as cloth for disposable medican garments or the like.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: November 28, 1989
    Assignee: Uni-Charm Corporation
    Inventors: Satoshi Nozaki, Shigeo Imai, Makoto Ishigami, Katsushi Tomida
  • Patent number: 4868958
    Abstract: Process and apparatus for producing apertured or non-apertured nonwoven fabric wherein fibrous web is introduced onto support means and treated with high velocity water streams jetted from above. The non-apertured nonwoven fabric may be produced by fiber entangling treatment on a smooth surfaced plate including a plurality of drainage holes as first support means or by further fiber entangling treatment performed on water impermeable second support means after the fiber entangling treatment performed on the first support means.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: September 26, 1989
    Assignee: Uni-Charm Corporation
    Inventors: Migaku Suzuki, Satoshi Nozaki, Shigeo Imai, Makoto Ishigami
  • Patent number: 4840829
    Abstract: A nonwoven fabric patterned with apertures comprising nonwoven fabric areas into which individual fibers are gathered and entangled together and continuously from which said fibers are branched, and circular or elliptical apertures defined by said areas in a regular pattern. Such nonwoven fabric is produced by treating a fibrous web on a support having thereon a plurality of projections distributed at predetermined intervals with a high speed water jet.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: June 20, 1989
    Assignee: Uni-Charm Corporation
    Inventors: Migaku Suzuki, Satoshi Nozaki, Shigeo Imai, Makoto Ishigami, Toshio Kobayashi