Patents by Inventor Ralph William Leonard

Ralph William Leonard 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 for the reclamation of zinc from galvanizing baths
    Patent number: 4075008
    Abstract: Zinc is removed in a substantially pure form from the dross skimmings of galvanizing baths. The dross is poured into a mold and solidified. The solidified mold is then placed on a permeable base and in the substantial absence of agitation, reheated to a temperature of 420.degree. to 700.degree. C to melt out the zinc in an uncontaminated form.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: February 21, 1978
    Assignee: United States Steel Corporation
    Inventor: Ralph William Leonard