Patents by Inventor Jennings B. Lewis

Jennings B. Lewis 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).

  • Production of ultra low carbon steel by the basic oxygen process
    Patent number: 4397685
    Abstract: Low alloy steel having an ultra low carbon content is produced using the basic oxygen process wherein an inert gas is introduced into the melt when the melt has a carbon content below about 0.06 weight percent, the oxygen flowrate is adjusted to from 10 to 40 percent of the inert gas flow rate and the oxygen lance height is reduced to from 30 to 60 percent of the normal lance height.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: August 9, 1983
    Assignee: Union Carbide Corporation
    Inventors: Wayne J. Maddever, Michael T. Burns, Jennings B. Lewis
  • Method for increasing vessel lining life for basic oxygen furnaces
    Patent number: 4373949
    Abstract: A method for increasing the life of the refractory lining of a basic-refractory-lined vessel for the production of steel by blowing oxygen into a ferrous melt from above the surface of the melt, comprising:(a) introducing into the vessel slag forming ingredients, including dolomitic lime, such that the amount of dolomitic lime exceeds the amount normally used, and(b) introducing inert gas into the melt in such manner as to cause intensive interaction between the slag and the melt.The preferred inert gas is argon.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: February 15, 1983
    Assignee: Union Carbide Corporation
    Inventors: Jerry V. Spruell, Jennings B. Lewis, III
  • Argon in the basic oxygen process to control slopping
    Patent number: 4210442
    Abstract: Slopping of emulsion from the mouth of a basic oxygen refining vessel is prevented during oxygen refining by introducing inert gas into the vessel when slopping is imminent or has begun. The preferred method is to inject argon in admixture with oxygen through the oxygen lance at a flow rate of from 5 to 30 percent of the oxygen flow rate.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: July 1, 1980
    Assignee: Union Carbide Corporation
    Inventors: Jennings B. Lewis, III, Peter P. Kelly