Patents by Inventor Phillip Andrew Fisher

Phillip Andrew Fisher 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).

  • Addition of magnesium to molten metal
    Patent number: 4040818
    Abstract: An additive for a ferrous melt to remove sulphur comprises agglomerates of a mixture of from 15 to 50% by weight of magnesium, 1 to 10% by weight of calcium fluoride and a refractory material to form a metal-permeable matrix when subjected to the temperature of a ferrous melt. The agglomerates may contain a binder and be formed into briquettes. The additive may be introduced into the melt by plunging.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: August 9, 1977
    Assignee: Magnesium Elektron Limited
    Inventors: Gordon A. Clegg, Geoffrey Maurice Cull, Phillip Andrew Fisher, William Unsworth
  • Addition of magnesium to molten metal
    Patent number: 3957502
    Abstract: A magnesium additive for ferrous melts comprises a structure of particulate magnesium and a material which forms a coherent, stable metal permeable matrix when subjected to the temperature of a ferrous melt. The additive may comprise magnesium granules enveloped with such a material, which may be carbon or calcium fluoride. The additive may also comprise a homogeneous mixture of magnesium with a refractory material, or may comprise magnesium surrounded by carbonaceous material capable of forming a skeletal carbon structure. The carbonaceous material may comprise an organic binder and may be mixed with other materials, such as carbon and calcium fluoride.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: May 18, 1976
    Assignee: Magnesium Elektron Limited
    Inventors: Geoffrey Maurice Cull, Phillip Andrew Fisher