Patents by Inventor Dennis Ristvedt

Dennis Ristvedt 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: 6568419
    Abstract: A disposable fluid control island for workers is made of a broad, shallow tray or flat open-topped container that is filled with a stiff mesh, grid, grille or net upon which workers may stand. Water, oil, blood and other liquids pass through the mesh easily and are retained in the tray. Workers are supported above the accumulated liquids by the support medium. The apparatus helps to keep the feet of workers dry, reduces the likelihood of slipping, and prevents liquids from dispersing. The disposable fluid control island is particularly well-suited for use during orthopedic surgical procedures, but can be used with other activities including plumbing repairs, handling of hazardous materials, and other medical procedures. Fluid collected by the disposable fluid control island may be removed by vacuum or liquid drains, sealed into containers, and disposed of appropriately given the nature of the materials.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: May 27, 2003
    Assignee: Promethean Medical Technologies, Inc.
    Inventors: Allan Robinson, Dennis Ristvedt