Patents by Inventor Manis Kumar Jha

Manis Kumar Jha 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).

  • 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
  • NOVEL PRE-TREATMENT PROCESS FOR LIBERATION OF METALS FROM WASTE PRINTED CIRCUIT BOARDS USING ORGANIC SOLUTION
    Publication number: 20100071507
    Abstract: The present invention relates to a method for recovering valuable metals contained in printed circuit boards of waste electronic machine, and more particularly, to a method for recovering valuable metals from waste printed circuit boards by separating several plastic layers laminated using an organic solution and then separating plastic components from metal components using an electrostatic separation process. According to the present invention, it is possible to separate the non-metal containing the plastic components and the metal components from the waste printed circuit boards by separating the several plastic layers laminated via simple pre-process using an organic solvent and obtain the metal recovery ratio of 99.99% via the pre-process and an electrostatic separation process.
    Type: Application
    Filed: July 28, 2008
    Publication date: March 25, 2010
    Inventors: Jae Chun Lee, Jae Min Yoo, Jin Ki Jeong, Manis Kumar Jha