Patents by Inventor Martin Houchin

Martin Houchin 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).

  • Solvent extraction process for recovering nickel and cobalt from each solutions
    Publication number: 20040050212
    Abstract: A method of separating nickel, cobalt or both from other cations contained in a leach solution, the method including the steps of subjecting the leach solution to separate solvent extraction steps using an organophosphinic acid, a carboxylic acid and an organophosphinic acid.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 18, 2004
    Inventors: Chu Yong Cheng, Martin Houchin