Patents by Inventor Yen P. Ting

Yen P. Ting 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).

  • Recovery of precious metals from acid solutions by N-containing electroactive polymers
    Patent number: 5411573
    Abstract: The present invention is directed to a process for reducing the oxidation state of a metal by contacting an acidic solution of the metal with an electroactive polymer, and accumulating and recovering the metal. More particularly, the invention is directed to a method for recovering precious metals like gold, platinum, palladium, and gold-platinum alloys from acidic solution by contacting the solution with an electroactive polymer like polyaniline or polypyrrole.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: May 2, 1995
    Assignee: National University of Singapore
    Inventors: En-Tang Kang, Yen P. Ting, Koon G. Neoh, Kuang L. Tan