Patents by Inventor Nikola A. Lingorski

Nikola A. Lingorski 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).

  • Method and apparatus for continuous measurement of the temperature of electroconductive melt and the thickness of refractory lining
    Patent number: 4995732
    Abstract: Simultaneous measurements of the temperature are taken at different points in time along with discrete measurements of the thickness of the refractory lining of the melt vessel. The temperature are measured at two exactly fixed cross-sections spaced along a system of heat-conductive bodies, with each body having a diameter smaller than the diameter of wetting by the electroconductive melt of all the bodies, the temperature indicator being incorporated in the refractory lining.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: February 26, 1991
    Assignee: Nis Pri Vissh Chimikotechnologiches Ki Institut
    Inventors: Nikola A. Lingorski, Mincho B. Hadjiiski, Rumen B. Yovchev, Kamen B. Spassov, Peter H. Savov
  • Method and apparatus for the refining of iron-based melts
    Patent number: 4246023
    Abstract: An apparatus and a method of operating an apparatus for the refining of a ferrous melt make use of a ladle with a removable cover provided with a porous plug at its bottom through which an inert gas is introduced. A direct current source is connected to an electrode means comprising at least three electrodes in electrical contact with the melt.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: January 20, 1981
    Assignee: DSO "Charna Metalurgia"
    Inventors: Peter H. Savov, Vassil G. Peev, Alexander Y. Valchev, Nikola A. Lingorski
  • Method for the refining of iron-based melts
    Patent number: 4200452
    Abstract: A method of and an apparatus for the refining of a ferrous melt makes use of a ladle with a removable cover provided with a porous plug at its bottom through which an inert gas is introduced. A direct current source is connected to a carbon electrode in contact with the melt and at least one electrode above the melt.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: April 29, 1980
    Assignee: DSO "Cherna Metalurgia"
    Inventors: Peter H. Savov, Vassil G. Peev, Alexander Y. Valchev, Nikola A. Lingorski