Patents by Inventor Richard G. Kaldon

Richard G. Kaldon 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).

  • Metallurgical treatment lance
    Patent number: 4989838
    Abstract: A lance adapted for metallurgical treatment comprising an elongated tube-shaped member having a refractory coating thereon and a sleeve of carbon bonded refractory fitted about the tube-shaped member at the slagline to protect the slagline region thereof.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: February 5, 1991
    Inventors: Richard G. Kaldon, William K. Brown