Patents by Inventor Brian Frederic Satterfield

Brian Frederic Satterfield 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 filled paper and compositions for use in this
    Patent number: 5755930
    Abstract: Filled paper is made by adding a cationising amount of cationic polymer to precipitated calcium carbonate or other filler either as a slurry or in a thick stock component, producing a thin stock containing the cationised filler and then treating the thin stock with a formaldehyde resin and polyethylene oxide as a retention system prior to drainage and drying.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: May 26, 1998
    Assignees: Allied Colloids Limited, Minerals Technologies Inc.
    Inventors: Brian Frederic Satterfield, Bruce Evans, Thomas Adrian Cauley
  • Dewatering of aqueous suspensions
    Patent number: 5681480
    Abstract: A mill waste or deinking waste or other suspension containing cellulosic material and hydrophobic material is flocculated by a cationic polymeric flocculant and the flocculated material, is then aggregated by a swelling clay or other anionic colloidal material, optionally further cationic flocculant is added, and the aggregated material is then separated by belt pressing or other pressure filtration as a cake.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: October 28, 1997
    Assignee: Allied Colloids Limited
    Inventors: John Graham Langley, Philip Anson Ford, Stephen Robert Tremont, Brian Frederic Satterfield