EP 0988150 A2 20000329 - SECURITY DOCUMENT AND METHOD USING INVISIBLE CODED MARKINGS
Title (en)
SECURITY DOCUMENT AND METHOD USING INVISIBLE CODED MARKINGS
Title (de)
SICHERHEITSDOKUMENT UND METHODE WELCHE UNSICHTBARE KODIERTE MARKIERUNGEN VERWENDET
Title (fr)
DOCUMENT DE SECURITE ET PROCEDE D'UTILISATION DE MARQUES DE CODES INVISIBLES
Publication
Application
Priority
- US 9720342 W 19971105
- US 3036696 P 19961105
Abstract (en)
[origin: WO9822291A2] An invisible indicia or encoded information is imprinted on a substrate using a compound which produces a fluorescence at a wavelength greater than about 650 nm when exposed to near infrared radiation. The information is covered by a layer of material that reflects or absorbs a substantial amount of the visible and UV radiation illuminating its surface.
IPC 1-7
IPC 8 full level
B41M 3/14 (2006.01); B42D 15/00 (2006.01); B42D 15/10 (2006.01)
CPC (source: EP)
B41M 3/144 (2013.01); B42D 25/378 (2014.10); B42D 25/382 (2014.10); B42D 25/387 (2014.10)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
WO 9822291 A2 19980528; WO 9822291 A3 19981015; AU 5249798 A 19980610; DE 69718826 D1 20030306; DE 69718826 T2 20030807; EP 0988150 A2 20000329; EP 0988150 A4 20000329; EP 0988150 B1 20030129; JP 2001504406 A 20010403
DOCDB simple family (application)
US 9720342 W 19971105; AU 5249798 A 19971105; DE 69718826 T 19971105; EP 97947408 A 19971105; JP 52369798 A 19971105