Security strips

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...

Reexamination Certificate

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C428S137000, C428S916000, C283S072000, C283S074000, C283S085000, C283S086000

Reexamination Certificate

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07090917

ABSTRACT:
Security strips for identifying the genuineness of sheet material such as documents, securities and banknotes. The security strips are constructed of several different components, encoding means and electrically conductive layers connected in different arrangements on a support substrate. Layers of known per se electrically conductive polymers are being used. The security strips are applied on the sheet material or they are integrated in the sheet material. These security strips constitute insurmountable technological obstacles for a forger.

REFERENCES:
patent: 4290630 (1981-09-01), Lee
patent: 4579371 (1986-04-01), Long et al.
patent: 4609207 (1986-09-01), Muck et al.
patent: 5176405 (1993-01-01), Kaule et al.
patent: 5639126 (1997-06-01), Dames et al.
patent: 2002/0113430 (2002-08-01), Beghello et al.
patent: 2003/0164611 (2003-09-01), Schneider et al.
patent: 2004/0101664 (2004-05-01), Puttkammer
patent: 2004/0105957 (2004-06-01), Puttkammer

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