公开(公告)号：US12016678B2

公开(公告)日：2024-06-25

申请号：US16492704

申请日：2018-03-14

Applicant: THE SECRETARY OF STATE FOR DEFENCE

Inventor： Roberto Stefano Pasquale King ,  Paul Francis Kelly ,  Steven Geoffrey Thorngate

IPC: A61B5/1172 ,  C01B21/086 ,  C01B25/234 ,  G06V40/12 ,  G06V40/13

CPC classification number: A61B5/1172 ,  C01B21/086 ,  C01B21/0865 ,  C01B25/234 ,  G06V40/1306 ,  G06V40/1365

Abstract: The present invention provides a method for the production of a metal halide adduct of S4N4, in particular a specific copper adduct of S4N4, for the visualisation of a print on an object, in particular a fingerprint on a metal object. The present invention also provides a method and apparatus for visualising a print on an object, using S2N2 obtained from a metal halide adduct of S4N4.