Patents Assigned to Northamptonshire Police Authority
  • Fingerprint detection
    Patent number: 8529982
    Abstract: The invention relates to an apparatus for and a method of detecting latent fingerprints on a previously heated substrate, such as a bullet casing following discharge of a bullet. By applying a potential difference across the substrate, and contacting the substrate with detection means, such as graphite coated beads, arranged to selectively attract to or repel from the area of a latent fingerprint on the surface, a latent fingerprint may be recovered.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: September 10, 2013
    Assignee: Northamptonshire Police Authority
    Inventor: John Bond
  • Fingerprint detection
    Patent number: 8142834
    Abstract: A method of and apparatus (2) for locating and detecting a fingerprint deposited on a surface (10), the method comprising setting up an electric field such that a differential charge density is produced coincident with the location of a fingerprint deposited on the surface. By deploying a conductive powder or other detection element selectively attractable to the surface (10) coincident with the differential charge density in the region of the fingerprint deposit a fingerprint deposited on the surface (10) is located and detected.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: March 27, 2012
    Assignee: Northamptonshire Police Authority
    Inventor: John Bond
  • FINGERPRINT DETECTION
    Publication number: 20120036946
    Abstract: The invention relates to an apparatus for and a method of detecting latent fingerprints on a previously heated substrate, such as a bullet casing following discharge of a bullet. By applying a potential difference across the substrate, and contacting the substrate with detection means, such as graphite coated beads, arranged to selectively attract to or repel from the area of a latent fingerprint on the surface, a latent fingerprint may be recovered.
    Type: Application
    Filed: October 23, 2009
    Publication date: February 16, 2012
    Applicant: NORTHAMPTONSHIRE POLICE AUTHORITY
    Inventor: John Bond