Patents by Inventor Pietro Cavanna

Pietro Cavanna 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).

  • Building element and a construction method using such an element
    Patent number: 4766711
    Abstract: A lightweight building element is moulded in the form of a three or four sided shell defining an interior space for receiving a filler material. The element is trapezoidal in at least one elevation so as to be stackable with a plurality of identical elements for ease of transportation. The method of the invention involves laying the elements in courses and then filling the elements from above with a loose relatively heavy filler material such as gravel or sand to form a solid structure.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: August 30, 1988
    Assignee: Desert Systems Limited
    Inventors: Hubert P. M. Bermingham, Pietro Cavanna