Patents by Inventor Philip Anson Ford

Philip Anson Ford 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).

  • Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking
    Patent number: 7407561
    Abstract: The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for chain extension and crosslinking.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: August 5, 2008
    Assignee: Ciba Specialty Chemicals Water Treatments Ltd.
    Inventors: Zhiqiang Song, Philip Anson Ford
  • Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking
    Publication number: 20040226676
    Abstract: The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for chain extension and crosslinking.
    Type: Application
    Filed: April 20, 2004
    Publication date: November 18, 2004
    Inventors: Zhiqiang Song, Philip Anson Ford
  • 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