Patents by Inventor John P. MacDonald

John P. MacDonald 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).

  • Marine burial container
    Patent number: 4041582
    Abstract: A container for sea burials is made of paperboard treated and reinforced for holding a corpse and has openings therein located to prevent the entrapment of air and thereby allow the container to sink more rapidly. The container has concrete members with straps for attachment to the corpse located therein to reduce the buoyancy and to hold the corpse to the floor of the sea.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: August 16, 1977
    Inventor: John P. MacDonald