Patents by Inventor Colin J. Wall

Colin J. Wall 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).

  • Protection of graphite electrodes
    Patent number: 4435510
    Abstract: Matter for protecting graphite electrodes of electric arc furnaces, e.g. for steelmaking, to reduce loss of graphite by oxidation, comprises particles containing both a graphite-wetting fusible matrix material and a refractory filler. Methods of making and using the particulate matter are disclosed.
    Type: Grant
    Filed: August 3, 1982
    Date of Patent: March 6, 1984
    Assignee: Foseco Trading A.G.
    Inventors: Dennis Greensmith, Roderic H. Hammerton, Colin J. Wall, Dietger Dunkelmann, Helmut Jaunich, Josef Schiffarth