Patents by Inventor Wesley A. Howell

Wesley A. Howell 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).

  • Wetness indicating diaper
    Patent number: 5389093
    Abstract: The present invention is a reusable wetness indicating cloth diaper which uses a thermally sensitive indicator to indicate that the diaper has become soiled. The diaper of the present invention includes material which at least partially thermally insulates the outer surface from said inner surface and an indicator on the outer surface which provides a visual indication when the outer surface has a temperature above a given threshold. The temperature threshold is chosen such that the visual indication will generally not be present when a baby wearing said diaper is dry, but will generally be present when the baby secretes waste material into the diaper. A thermochromic ink indicates a temperature change in the diaper. A plurality of discrete indicators are distributed over substantially the entire outer surface of the diaper with the indicators forming a repeating pattern.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: February 14, 1995
    Inventor: Wesley A. Howell
  • Wetness indicating diaper
    Patent number: 5197958
    Abstract: The present invention is a reusable wetness indicating cloth diaper which uses a thermally sensitive indicator to indicate that the diaper has become soiled. The diaper of the present invention includes material which at least partially thermally insulates the outer surface from said inner surface and an indicator on the outer surface which provides a visual indication when the outer surface has a temperature above a given threshold. The temperature threshold is chosen such that the visual indication will generally not be present when a baby wearing said diaper is dry, but will generally be present when the baby secretes waste material into the diaper. A thermochromic ink indicates a temperature change in the diaper. A plurality of discrete indicators are distributed over substantially the entire outer surface of the diaper with the indicators forming a repeating pattern.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: March 30, 1993
    Inventor: Wesley A. Howell