Patents by Inventor Janco H. Janev

Janco H. Janev 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 apparatus
    Patent number: 4208041
    Abstract: A metallurgical apparatus; air is continuously blown into a mixture of agglomerates of lead concentrates and carbonaceous fuel in a shaft furnace. The resulting slag is delivered from the shaft furnace into a settling tank to which the slag continuously flows while the slag is continuously delivered from the settling tank into a fuming furnace, so that the slag flows in cascade from the shaft furnace to the settling tank and from the settling tank to the fuming furnace, thereby providing a continuous flow of the treated slag from the shaft furnace through the settling tank into the fuming furnace; the slag, in addition, is continuously withdrawn from the shaft furnace.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: June 17, 1980
    Inventors: Jordan T. Jordanov, Georgi I. Abrashev, Velyu D. Jekov, Georgi T. Georgiev, Georgi A. Haralampiev, Janco H. Janev, Velcho A. Prodanov