(19)
(11) EP 2 524 814 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.07.2013 Bulletin 2013/28

(43) Date of publication A2:
21.11.2012 Bulletin 2012/47

(21) Application number: 12167814.8

(22) Date of filing: 14.05.2012
(51) International Patent Classification (IPC): 
B42D 15/00(2006.01)
D21H 21/42(2006.01)
C09D 11/00(2006.01)
 B41M 3/14(2006.01)
G07D 7/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 18.05.2011 CH 8432011

(71) Applicant: Landqart
7302 Landquart (CH)

(72) Inventor:
  • Kocher, Christoph
    7302 Landquart (CH)

(74) Representative: Bremi, Tobias Hans 
Isler & Pedrazzini AG Postfach 1772
8027 Zürich
8027 Zürich (CH)

   


(54) Improvements in security features


(57) The invention pertains to a security element such as a security thread (1) for a security document comprising at least one layer of metallization (2) or metallic print, wherein said layer (2) is electric contact with at least one sacrificial element (5) protecting the metallization (2) or metallic print from corrosion. it furthermore pertains to a method for making such a security threat, a security document comprising such a security thread, and to a method for making such a security document.










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