Patents by Inventor Charles A. Estadt

Charles A. Estadt 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: 5129212
    Abstract: A method and apparatus are disclosed for automatically filling and sterilizing capped and spouted flexible fluid containers. Included is a mechanism for advancing at least an individual empty container toward a filling station; a sterilizing device for sterilizing at least a portion of each spout in a sterilizing chamber; and a device for advancing each spouted container through the sterilizing chamber. The sterilizing device includes means for introducing gaseous hydrogen peroxide into the sterilizing chamber and a mechanism for radiating the spouts in the chamber with pre-selected ultraviolet radiation. Also enclosed is a device for filling the empty container with the substance in a sterile environments.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: July 14, 1992
    Assignee: Liqui-Box/B-Bar-B Corporation
    Inventors: Craig L. Duffey, Charles A. Estadt, Roger J. Gerdeman