Patents by Inventor J. Marvin Herndon

J. Marvin Herndon 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).

  • Chemical extraction of metals from ores
    Patent number: 4739973
    Abstract: A novel system for chemically leaching ore that decreases pollution to the environment and that enhances reaction kinetics and economic considerations. An impervious covering (18) blankets a distribution network of drip lines (17) laid over the ore heap (14). A lixiviate containing solution is forced by means of a pump (11) through a venturi eductor (19) into the distribution network of drip lines (17) for application to the ore heap (14). After percolating through the ore heap (14), the leach solution is recycled through a recovery system (16) to the venturi eductor (19).
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: April 26, 1988
    Inventor: J. Marvin Herndon