Patents by Inventor Clive Happs

Clive Happs 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).

  • Production of alumina
    Patent number: 5547647
    Abstract: Bauxite that is to be used in the Bayer process for the recovery of alumina is washed with aqueous wash liquor having a caustic content of at least 50 g/l and which comprises aqueous caustic from the alumina recovery circuit of the Bayer process and, after removing organic material from the wash liquor, the wash liquor is included in the digestion stage, the separation stage or the alumina recovery circuit of the Bayer process.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: August 20, 1996
    Assignee: Allied Colloids Limited
    Inventors: Gillian M. Moody, Clive Happs