METHOD AND AIDS FOR SECURITIES FALSIFICATION PROTECTING Russian patent published in 1997 - IPC

FIELD: falsification protection technology. SUBSTANCE: method includes protecting item, bank-note or document marking by strip or thread intruding to item material. So made mark contains osmium-187 or its compounds which presence can be detected by nuclear magnetic resonance aids using. Mark agent can be placed between two bands made from polymer material to compose mark strip or mark agent can be used as filler of polymer thread. Besides mark agent can be made like chemical compound with permanent magnetic orientation of osmium-187 atoms. EFFECT: higher level of securities protection, simpler mark making method. 15 cl, 3 dwg