Patents by Inventor Eric Gillam

Eric Gillam 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).

  • Tungsten carbide-based hard metals
    Patent number: 4339272
    Abstract: A tungsten carbide-based hard metal comprises 75-97 weight % tungsten carbide. The balance is binder. To avoid using cobalt binder as is conventional, a typical binder composition is 14 weight % manganese, 21/2% carbon, 5% nickel and balance iron.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: July 13, 1982
    Assignee: National Research Development Corporation
    Inventors: Rajeev K. Grover, Eric Gillam