Inventor

ZERBEL HANS

DE3 patents

Patents

3 patents

US6686074B2Feb 3, 2004

Secured documents identified with anti-stokes fluorescent compositions

BUNDESDRUCKEREI GMBH36 citations88

US7092583B2Aug 15, 2006

Apparatus and method for detecting the authenticity of secured documents

BUNDESDRUCKEREI GMBH17 citations82

US6784441B2Aug 31, 2004

Handsensor for authenticity identification of signets on documents

BUNDESDRUCKEREI GMBH7 citations71