Patents by Inventor Christopher Charles Driffield

Christopher Charles Driffield 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 making granular detergent compositions comprising amphiphilic graft copolymers
    Patent number: 8334250
    Abstract: A process of making a granular detergent composition comprising amphiphilic graft copolymer. The granular detergent composition may have an L-3b value of at least about 73.5.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: December 18, 2012
    Assignee: The Procter & Gamble Company
    Inventors: Rohan Govind Murkunde, Sarah Jane Melville, Malcolm McClaren Dodd, Stefan James Egan, Christopher Charles Driffield, Andrew Brian Greenaway Patton
  • GRANULAR DETERGENT COMPOSITIONS COMPRISING AMPHIPHILIC GRAFT COPOLYMERS
    Publication number: 20110152161
    Abstract: A granular detergent composition comprises greater than about 1.5% of amphiphilic graft copolymer. The amphiphilic graft copolymer in turn comprises a graft copolymer of polyethylene, polypropylene or polybutylene oxide with vinyl acetate in a weight ratio of from about 1:0.2 to about 1:10. The granular detergent composition has an L?3b value of at least about 73.5.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Inventors: Rohan Govind Murkunde, Sarah Jane Melville, Malcolm McClaren Dodd, Stefan James Egan, Christopher Charles Driffield, Andrew Brian Greenaway Patton
  • METHOD OF MAKING GRANULAR DETERGENT COMPOSITIONS COMPRISING AMPHIPHILIC GRAFT COPOLYMERS
    Publication number: 20110152160
    Abstract: A process of making a granular detergent composition comprising amphiphilic graft copolymer. The granular detergent composition may have an L-3b value of at least about 73.5.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Inventors: Rohan Govind Murkunde, Sarah Jane Melville, Malcolm McClaren Dodd, Stefan James Egan, Christopher Charles Driffield, Andrew Brian Greenaway Patton
  • Process for preparing a foam component
    Patent number: 6706773
    Abstract: The present invention relates to a process for preparing a foam component, said process comprises the steps of extruding a viscous mixture from a rotating extrusion plate onto a receiving surface. Said process provides a convenient, efficient, simple means of preparing foam components, especially foam components suitable for use in cleaning compositions. The present invention also provides a foam component obtainable therefrom.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: March 16, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Matthew Grady McGoff, Scott Edward Stephans, Hossam Hassan Tantawy, Christopher Charles Driffield
  • Process for manufacturing effervescence components
    Patent number: 6683043
    Abstract: A process for manufacturing effervescence component comprises grinding a coarse acid source to obtain an acid source whereof at least 75% has a particle size from 0.1 to 150 microns, mixing the ground acid source and the carbon dioxide source and optionally the binder and/or other actives to form a mixture, and submitting the mixture to a granulation step, preferably comprising a compaction step and/or an agglomeration step.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: January 27, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Anthony Dovey, Peter Gerard Gray, Gail Margaret Baston, Zoe Dyter, Christopher Charles Driffield, David William York