Patents by Inventor Ronald E. Melcher

Ronald E. Melcher 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).

  • Additive for green molding sand
    Patent number: 4131476
    Abstract: Salts of lithium or magnesium and an organic carboxylic acid, especially lithium acetate and/or magnesium acetate, are added to green molding sand to improve the properties of hot green molding sand at 110-160.degree. F (43.3-71.1.degree. C). Magnesium acetate is preferred, especially in green molding sands used for casting steel.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: December 26, 1978
    Assignee: Whitehead Brothers Company
    Inventors: Ronald E. Melcher, Frederick W. Schaefer