Patents by Inventor David G. Azar, Sr.

David G. Azar, Sr. 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).

  • Process of producing a useful soil cement product from industrial chemical waste
    Patent number: 4353749
    Abstract: Acid industrial waste containing calcium sulfate is reacted and neutralized with another alkaline industrial waste preferably containing iron oxide and aluminum oxide, mixed with water and stabilized with either Portland cement of fly ash to produce a chemically neutral and useful product in the form of soil cement.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: October 12, 1982
    Inventors: Louis F. Ray, David G. Azar, Sr.