Patents by Inventor Margaret Palau

Margaret Palau 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: 4529569
    Abstract: A method of manufacturing an expandable member comprising the steps of separating a shaped member from a sheet of cellular spongy material, soaking the member in a solution containing a water soluble binder and water, compressing the member into a container and drying the compressed member. The dried member expands to its original shape and size when placed in water.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: July 16, 1985
    Inventor: Margaret Palau
  • Patent number: D304238
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: October 24, 1989
    Inventor: Margaret Palau