Patents by Inventor Frances Meiling Lee

Frances Meiling Lee 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: 5947943
    Abstract: The present invention relates to an absorbent article (10) of the type having a liquid-permeable top sheet (14), a liquid-impermeable back sheet (16) having an exterior-facing side (20) and an interior-facing side (22), and an absorbent core (18) disposed between the top sheet (14) and the back sheet (16), further including a wetness-indicating material (24) disposed on the interior-facing side (22) of the back sheet (16) which changes appearance after exposure to moisture (26). The exterior-facing side (20) of the back sheet (16) generally has a light appearance when dry and the wetness-indicating material (24) has a light appearance when dry and a dark appearance when wet. The back sheet (16) can include a translucent moisture barrier layer (28) on the exterior facing side (20) and a liquid-permeable layer (30) on the interior side (22), with the wetness-indicating material (24) between the moisture barrier layer (28) and the liquid-permeable layer (30).
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: September 7, 1999
    Inventor: Frances Meiling Lee