Patents by Inventor Albert Joseph Liem

Albert Joseph Liem 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).

  • Method of treatment of wood ash residue
    Patent number: 7658780
    Abstract: A method of treatment of wood ash residue. A first step involves wetting the wood ash residue. A second step involves reacting the wetted wood ash residue with carbon dioxide gas. Mineral oxides and hydroxides are converted to carbonates, thereby reducing the caustic nature of the wood ash residue. A third step involves continuing to react the wetted wood ash residue until the resulting ash residue is substantially carbonated.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: February 9, 2010
    Assignee: Alberta Research Council Inc.
    Inventors: Richard Lyle Johnson, Richard Eugene Kuzub, Albert Joseph Liem, Clifford Paul Ronden