Patents by Inventor Iain Stewart Duncan

Iain Stewart Duncan 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).

  • Oral cleansing product
    Patent number: 6685918
    Abstract: There is disclosed an oral cleansing product comprising as an abrasive an alumnina in the form of particles having d10 below 3.5 &mgr;m, d50 below 1.0 &mgr;m, and a specific surface area below 6 m2/g.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: February 3, 2004
    Assignee: Alcan International Limited
    Inventors: Kevin John Wills, Iain Stewart Duncan
  • Toothpaste of selected calcined alumina particles
    Patent number: 6682717
    Abstract: There is disclosed a toothpaste comprising as an abrasive an alumina in the form of particles having d10 below 3.5 &mgr;m, d50 below 1.0 &mgr;m and a specific surface area below 6 m2/g.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: January 27, 2004
    Assignee: Alcan International Limited
    Inventors: Kevin John Wills, Iain Stewart Duncan