Patents by Inventor Suk Joong Im

Suk Joong Im 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).

  • Leaching of low-grade nickel complex ore
    Patent number: 3984237
    Abstract: A process for extracting nickel from a low-grade nickel complex ore. The process features leaching the ore under elevated temperatures for relatively short periods of time with an aqueous ammoniacal leach solution.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: October 5, 1976
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Suk Joong Im
  • Nickel extraction process
    Patent number: 3953200
    Abstract: A process for extracting nickel from a low-grade nickel complex ore. The process features simultaneously grinding and leaching of the ore with an aqueous ammoniacal leach solution.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: April 27, 1976
    Assignee: Ethyl Corporation
    Inventors: Suk Joong Im, James D. Johnston