Patents by Inventor Kenneth Metcalfe

Kenneth Metcalfe 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).

  • Detergent compositions
    Patent number: 6730649
    Abstract: A detergent composition comprising: (a) at least 5 wt % of a calcium-tolerant non-soap anionic surfactant system which comprises an alpha-olefin sulphonate; (b) at least 0.1 wt % of a cationic surfactant system in a weight ratio of (a):(b) of from 17:3 to 9:10, preferably from 3:1 to 1:1; and (c) the balance, if any, being other detergent ingredients.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 4, 2004
    Assignee: Unilever Home & Personal Care USA, a division of Conopco, Inc.
    Inventors: Kenneth Metcalfe, Vincent Charles Mole
  • Detergent compositions
    Patent number: 6716807
    Abstract: A detergent composition comprising: (a) more than 10 wt % of a calcium-tolerant non-soap anionic surfactant system; (b) from 0.1% to 10%, preferably from 0.5% to 10%, more preferably from 1% to 10% by weight of a strong builder system selected from phosphate builders and aluminosilicate builders and mixtures thereof; and (c) the balance, if any, being other detergent ingredients wherein said composition comprises less than 35 wt %, preferably less than 25 wt %, more preferably less than 15 wt % of non-functional non-alkaline water soluble inorganic salt.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: April 6, 2004
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Philippus Cornelis Van der Hoeven, Kenneth Metcalfe
  • Detergent compositions
    Publication number: 20030045440
    Abstract: A detergent composition comprising:
    Type: Application
    Filed: December 19, 2001
    Publication date: March 6, 2003
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Philippus Cornelis Van der Hoeven, Kenneth Metcalfe
  • Detergent compositions
    Publication number: 20020155974
    Abstract: A detergent composition comprising:
    Type: Application
    Filed: December 19, 2001
    Publication date: October 24, 2002
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Kenneth Metcalfe, Vincent Charles Mole
  • Free flowing detergent composition containing high levels of surfactant
    Patent number: 6221831
    Abstract: A free-flowing built particulate laundry detergent composition comprises: (i) at least 27% by weight of non-soap organic detergent surfactant, (ii) one or more detergency builders, but not more than 7% by weight of alkali metal aluminosilicate, the weight ratio of surfactant to builder being at least 1.2:1.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: April 24, 2001
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: William Derek Emery, Andreas Theodorus Groot, Terry Instone, Seeng Djiang Liem, Kenneth Metcalfe, Richard George Smith, Gilbert Martin Verschelling
  • Production of anionic surfactant granules
    Patent number: 5646107
    Abstract: A process for producing granules of anionic surfactant, preferably PAS by heating an aqueous paste of the surfactant to a temperature in excess of 130.degree. C. and subsequently cooling the feedstock to provide surfactant granules, detergent particles obtainable by the process and compositions containing them are disclosed.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: July 8, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: William Derek Emery, Kenneth Metcalfe, Peter James Tollington
  • Production of anionic surfactant granules by in situ neutralization
    Patent number: 5641741
    Abstract: A process for producing granules of anionic surfactant, preferably PAS by in situ neutralisation of a precursor acid to form the surfactant, heating the surfactant to a temperature in excess of 130.degree. C. and subsequently cooling the to provide surfactant granules is disclosed. Detergent compositions containing such granules are also disclosed.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: June 24, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: William Derek Emery, Kenneth Metcalfe, Peter James Tollington
  • Production of anionic surfactant granules by in situ neutralization
    Patent number: RE37949
    Abstract: A process for producing granules of anionic surfactant, preferably PAS by in situ neutralisation of a precursor acid to form the surfactant, heating the surfactant to a temperature in excess of 130° C. and subsequently cooling the to provide surfactant granules is disclosed. Detergent compositions containing such granules are also disclosed.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: December 31, 2002
    Assignee: Lever Brothers Company, division of Conopco, Inc.
    Inventors: William Derek Emery, Kenneth Metcalfe, Peter James Tollington