Patents by Inventor John A. Dehuff

John A. Dehuff 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).

  • Agents for the removal of impurities from a molten metal and a process for producing same
    Patent number: 4572737
    Abstract: There is disclosed an agent and a method for producing the same for removing impurities from a molten metal comprising a first compound capable of reacting with and removing the impurities contained in the molten metal and a second compound coated on the first compound to form a composite. The second compound has a contact angle with the molten metal less than that of the first compound, thereby causing the composite to be more wettable in the molten metal as compared to the first compound. This allows the composite to penetrate into the molten metal, resulting in the first compound efficiently reacting with the impurity contained within the molten metal.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: February 25, 1986
    Assignee: The BOC Group, Inc.
    Inventors: Stewart W. Robinson, Roger W. Bartram, John A. Dehuff