Patents by Inventor Colette Kock

Colette Kock 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).

  • Stable ferric arsenate precipitation from acid copper solutions whilst minimising copper losses
    Patent number: 7314604
    Abstract: A method of which includes the steps of introducing an acidic solution containing (V), copper, ferric iron and ferrous iron into a first tank of a series of continuously stirred tank reactors and, in the first tank, adding air to the solution; heating the solution to an elevated temperature; recycling a portion of selectively precipitated ferric arsenate compounds to the said first tank; and seeding the solution with ferric arsenate compounds.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: January 1, 2008
    Assignee: Billiton Intellectual Property, B.V.
    Inventors: Paul Harvey, Colette Kock, John de Klerk Batty