Patents by Inventor Gerard C. Sinke

Gerard C. Sinke 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).

  • Extraction of non-ferrous metal values from dolomitic oxide ores
    Patent number: 4113471
    Abstract: A process for extracting non-ferrous metal values from an oxide ore. The process comprises leaching the ore with a solution containing at least one alkali metal chloride or alkaline earth chloride salt in the presence of an oxygen-containing gas at a temperature and pressure sufficient to solubilize the non-ferrous metal values into the solution of the metal chloride salt.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: September 12, 1978
    Assignee: The Dow Chemical Company
    Inventors: Martin A. Langhorst, Gerard C. Sinke, Elmer H. Mossner
  • Method of removing sulfur from coal
    Patent number: 4071328
    Abstract: A process of reducing the total sulfur content of coal is disclosed. The process comprises hydrogenating the coal to remove at least a portion of the recoverable sulfur combined as pyritic sulfur. The hydrogenated coal is subsequently contacted with a sufficient amount of an aqueous inorganic acid solution to remove at least a portion of the remaining sulfur initially combined as pyritic sulfur.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: January 31, 1978
    Assignee: The Dow Chemical Company
    Inventor: Gerard C. Sinke
  • Method for preventing evaporation-condensation caking of sodium chloride at high temperatures
    Patent number: 4048288
    Abstract: By providing about 1 percent of an extremely finely divided powder, e.g. less than about 60 microns, disposed throughout a body of sodium chloride particles, the salt particles can be heated without caking to temperatures higher than otherwise obtainable without experiencing caking. Suitable powders include those binary oxides, carbonates, sulfates, phosphates and hydroxides of Group II and Group IV elements, which are solids within the temperature range to be encountered.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: September 13, 1977
    Assignee: The Dow Chemical Company
    Inventors: Gerard C. Sinke, Martin A. Langhorst, James A. May, Sr.
  • Method for preventing eutectic caking of sodium chloride at high temperatures
    Patent number: 4038188
    Abstract: A body of particles of sodium chloride (1) initially containing sodium sulfate and/or sodium carbonate, and/or (2) exposed to compounds capable of reacting in situ with the sodium chloride and/or with each other to form sodium sulfate and/or sodium carbonate, is maintained free from caking at temperatures within the range of from about 610.degree. C to at least about 700.degree. C by maintaining such a body substantially free from sodium sulfate and/or sodium carbonate. One or more compounds, at least one of which contains calcium ion, are provided in the system to react with any sodium sulfate and sodium carbonate present in the system initially, and with any compounds in the system which would otherwise react to form sodium sulfate and/or sodium carbonate.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: July 26, 1977
    Assignee: The Dow Chemical Company
    Inventors: James A. May, Sr., Gerard C. Sinke, Martin A. Langhorst