Patents by Inventor Roberto Busin

Roberto Busin 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).

  • Protective layer for a metal substrate and a method of producing same
    Patent number: 5230755
    Abstract: A protective layer for a metal substrate is metallurgically bonded to the substrate and contains (as a percentage by mass) 35 to 50% chromium, up to 10% of which can be replaced by molybdenium, and at least iron, the proportion of iron being at least 25%. The minimum hardness is 800 HVO.1, obtained by a structure having a minimum content of 5% by volume as sigma phase. The sigma phase is obtained by heat-treatment of the coated substrate. The protective layer is particularly resistant to corrosion and also has good resistance to erosion and wear.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: July 27, 1993
    Assignee: Sulzer Brothers Limited
    Inventors: Michel Pierantoni, Roberto Busin, James Simpson, Roger Dekumbis