Patents by Inventor Stephen Chapkis

Stephen Chapkis 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).

  • Inflatable novelty device
    Patent number: 5389030
    Abstract: A novelty device includes an inflatable element fixed to a nipple which is normally covered. Adding fluid to a chamber which includes a fluid-reactive element causes a pressure increase to be imparted to the inflated element which then expands under the action of the pressure. Normally the nipple and the inflatable element are covered so as to be hidden from view prior to the addition of a fluid.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: February 14, 1995
    Inventor: Stephen Chapkis