Patents by Inventor Charles Requardt

Charles Requardt 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).

  • Publication number: 20070131710
    Abstract: A device for flexible, collapsible walled tubes containing a pliable viscous substance for extrusion through an opening in the tube is discussed, which effectively reduces the volume in the tube by moving the contents of the tube toward the end of the tube having the opening. The device has a slot through the middle that is of such width as to allow the flattened and sealed end of the flexible, collapsible walled tube to be inserted, and to enable the device to be slid along the flexible collapsible walled tube body toward the opening. The small tubular one-piece device is of molded plastic or metal and has suitable space for sticker logos on either side of said device.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 14, 2007
    Inventor: Charles Requardt