Patents by Inventor Ian Langdon

Ian Langdon 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).

  • Publication number: 20240156647
    Abstract: An absorbent article having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent structure comprising an open-celled absorbent foam material disposed between the topsheet and backsheet. The absorbent article has been incrementally stretched along at least a first and second stretch direction, such that the topsheet and backsheet each comprise plastically stretched zones disposed substantially along a first plurality of lines of deformation being substantially perpendicular to the first stretch direction and a second plurality of lines of deformation being substantially perpendicular to the second stretch direction. The absorbent foam material is fractured substantially along the first and second plurality of lines of deformation into a plurality of discrete foam pieces that are separated from neighboring pieces by a gap. An adhesive is positioned between the topsheet and the discrete foam pieces and bonds the discrete foam pieces to the topsheet.
    Type: Application
    Filed: November 14, 2023
    Publication date: May 16, 2024
    Inventors: Frederick Michael LANGDON, Timothy Ian MULLANE, Bret Darren SEITZ
  • Patent number: 4661811
    Abstract: Map frames are stored on a video storage medium such as video disc, and a graphics generator stores overlay information such as the location of telephone lines plant. To accommodate maps of different scales covering the same area, the graphics generator applies a corresponding scaling factor to generation of the overlay image, for accurate superimposition of the map. Provision may also be made for correcting inaccuracies in the original process of recording the map frames.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: April 28, 1987
    Assignee: British Telecommunications plc
    Inventors: Michael J. Gray, Ian Langdon, Barry J. Woods