Patents Examined by Brooks Hunt
  • Boron-treated hard metal
    Patent number: 5116416
    Abstract: A hard, relatively non-brittle, cemented carbide body is made by sintering pressed grade carbide powders in the presence of a boron-containing material such as boron nitride. During sintering, appreciable quantities of boron migrate or diffuse into the body to become incorporated throughout the microstructure of the carbide resulting in the formation of a third quarternary phase comprised of tungsten, nickel, boron and carbon.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: May 26, 1992
    Assignee: Vermont American Corporation
    Inventors: Jack D. Knox, Donald C. Pennington, Jr.
  • Process of isolating hazardous waste by centrifugal casting and product
    Patent number: 4980090
    Abstract: Low-Level radioactive wastes and the like are identified by composition and segregated based on specific contaminants identified. The separated wastes are subsequently encapsulated in a centrifugal process prior to disposal. The wastes advantageously are subjected to heat prior to classification in order to remove any volatiles and hydrocarbons present.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 25, 1990
    Inventor: Frank Manchak, Jr.