Patents Assigned to Dental Root Filling Products Ltd
  • Expandable/contractable composition for surgical or dental use
    Patent number: 7210935
    Abstract: A composition, suitable for surgical or dental use, which can expand and/or contract in at least one direction without similar expansion or contraction in another direction, comprises an inner and an outer portion, the portions differing in their expansion properties and/or the extent to which they are prestressed.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: May 1, 2007
    Assignee: Dental Root Filling Products Ltd
    Inventors: Donald James Highgate, Jonathan Anthony Lloyd