Reduction Patents (Class 75/704)
  • Pre-treatment process for liberation of metals from waste printed circuit boards using organic solution
    Patent number: 7867317
    Abstract: A method for recovering valuable metals contained in printed circuit boards of waste electronic machine, and more particularly, a method for liberating metal and plastic laminated in waste printed circuit boards uses an organic solvent and then separates and recovers the liberated metal components using an electrostatic separation process.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Korea Institute of Geoscience and Minderal Resources
    Inventors: Jae Chun Lee, Jae Min Yoo, Jin Ki Jeong, Manis Kumar Jha