Title:
METHOD FOR ENCODING PRODUCTS
Document Type and Number:
WIPO Patent Application WO/2010/127757
Kind Code:
A3
Abstract:
The invention relates to a method for encoding products, wherein a magnetic composition containing magnetic nanoparticles is applied to at least one pre-determined surface unit of the surface of a product, and is dried and/or hardened. In the magnetic composition, monodispersed isotropic magnetic nanoparticles having at least one pre-determined nominal particle size are distributed homogeneously in a pre-determined concentration. A code is formed from the nominal particle size and/or from the concentration of the magnetic nanoparticles in the magnetic composition. The invention also relates a product encoded in such a way, and to a magnetic composition.
Inventors:
DIETZ JOHAN (DE)
HOLSCHUH KARL (DE)
BAUER JOHANN (DE)
KLEIN SYLKE (DE)
HOLSCHUH KARL (DE)
BAUER JOHANN (DE)
KLEIN SYLKE (DE)
Application Number:
PCT/EP2010/002243
Publication Date:
January 27, 2011
Filing Date:
April 12, 2010
Export Citation:
Assignee:
MERCK PATENT GMBH (DE)
DIETZ JOHAN (DE)
HOLSCHUH KARL (DE)
BAUER JOHANN (DE)
KLEIN SYLKE (DE)
DIETZ JOHAN (DE)
HOLSCHUH KARL (DE)
BAUER JOHANN (DE)
KLEIN SYLKE (DE)
International Classes:
G06K19/06; B42D15/00; G07D7/00
Domestic Patent References:
| WO2005008294A1 | 2005-01-27 |
Foreign References:
| EP1646057A2 | 2006-04-12 | |||
| US6869015B2 | 2005-03-22 | |||
| US20080159657A1 | 2008-07-03 |
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