Patents by Inventor Philippa Margaret Smith

Philippa Margaret Smith 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).

  • Antiperspirant salts, and methods of their preparation
    Patent number: 6432392
    Abstract: An antiperspirant active salt made by treating an aluminum salt of general formula; Al2(OH)6−aXa wherein X is Cl, Br or I, and a is 0.3 to 4.0, with an effective amount of a phosphorus containing material, and ageing the salt.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: August 13, 2002
    Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.
    Inventors: Alexander Thomas Ashcroft, Philippa Margaret Smith
  • Oral care compositions
    Patent number: 5824292
    Abstract: The invention relates to oral care compositions with colloidal anti-plaque agents which have been coated with particular polymers containing carbohydrate (saccharide) or peptide structures which are specifically recognised by bacterial adhesins, more particularly carbohydrate containing polymers recognized by bacterial lectins, or with antibodies or antibody fragments which recognize plaque bacterial antigens. Such coated colloidal anti-plaque agents, e.g. coated colloidal zinc oxide, can be target to specific sites in the human mouth where the anti-plaque agent is then released at acidic pH.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: October 20, 1998
    Assignee: Quest International B.V.
    Inventors: Stuart William Carr, Karen Marie Pickup, Philippa Margaret Smith, Kurt Matthew Schilling