Patents by Inventor Michael Burnhill

Michael Burnhill 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: 4922928
    Abstract: A three layered disposable vaginal device comprised of two resilient compressible polymeric foam layers separated by a non-permeable layer, the outermost layer being designed to include a receptacle. The device is also designed to include a removal tape that will permit the user to easily remove the same after use. The construction is intended for use as a barrier contraceptive with or without spermicide, as a delivery system for medicaments and also as a barrier to the transmission of sexually transmitted diseases.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: May 8, 1990
    Inventor: Michael Burnhill