Patents by Inventor Robert J. Borges

Robert J. Borges 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).

  • Corrosion and abrasion resistant alloy
    Patent number: 4929288
    Abstract: A white iron alloy exhibits enhanced combined corrosion and abrasion resistance in hot slurries, such as those formed in the production of raw phosphoric acid. The alloy may contain from between about 0.75% to 1.5% carbon, between about 2.0% to 2.5% manganese, between about 2.0 to 3.0% molybdenum, between about 1.0% to 2.0% copper, up to about 0.85% silicon, between about 0.5% to 1.0% tungsten, between about 24 to 30% chromium and the balance being iron along with normal residual elements. The alloy may be cast and is age hardenable.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: May 29, 1990
    Inventor: Robert J. Borges