Patents by Inventor Frank Ernest George Ravault

Frank Ernest George Ravault 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).

  • Bonding of particulate materials
    Patent number: 4015979
    Abstract: A method of bonding particulate material, especially such material which contains iron or zinc oxides, e.g. steelmaking fume or blast furnace dust, by treating the material with at least aqueous formic acid to produce an acid solution containing metal ions, and then allowing or causing the pH of the solution to increase so as to form a metal hydroxide to bond the material to consolidated form.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: April 5, 1977
    Assignee: Foseco International Limited
    Inventors: Robert Anthony Fishburn, Frank Ernest George Ravault
  • Production of porous ceramic materials
    Patent number: 4004933
    Abstract: Porous ceramic materials are made by impregnating a foam with a slurry of finely divided ceramic material, drying and firing the foam. Prior to impregnating the foam it is treated so that the particulate material of the slurry will adhere to the foam.
    Type: Grant
    Filed: December 20, 1972
    Date of Patent: January 25, 1977
    Assignee: Foseco International Limited
    Inventor: Frank Ernest George Ravault