Patents by Inventor Joseph W. Leonard, IV

Joseph W. Leonard, IV 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 monitoring the efficiency of raw material beneficiation apparatus
    Patent number: 4345994
    Abstract: A method for determining the efficiency of float-sink raw material separation units which achieve separation by specific gravity sorting of raw material in particle form introduced to a liquid bath. The efficiency is determined by introducing to the bath, with the raw material in particle form for separation, prepared particles of determined size and specific gravity and detecting the separation location of these prepared particles.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: August 24, 1982
    Inventors: Joseph W. Leonard, III, Joseph W. Leonard, IV