Composition for the delocalized marking of articles, its preparation and use
AssigneeConsortium fur Elektrochemische Industrie GmbH
InventorNorbert Hampp
Life of this patent
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Abstract
A composition for the delocalized marking of articles, which makes the forging or improper use or exploitation of these articles difficult. It includes chemical elements having a K.sub..alpha. line of from 3.69 keV to 76.315 keV in defined distributions, the physical properties of these substances and/or their elemental and/or quantitative composition serving as delocalized information which cannot be discerned with the naked eye.
Claims19
A composition which enables marking of articles which makes the forging or improper use or exploitation of these articles difficult, said composition comprising
- a mixture of chemical elements having a K.sub..alpha. line of from 3.69 keV to 76.315 keV wherein the amounts of the different elements represent an encrypted numerical code,
- the physical properties of said chemical elements serving as delocalized information which cannot be discerned with a naked eye of an observer of the article.
A process for the preparation of a composition which enables marking of articles which makes the forging or improper use or exploitation of these articles difficult, said composition comprising
- a mixture of chemical elements having a K.sub..alpha. line of from 3.69 keV to 76.315 keV wherein the amounts of the different elements represent an encrypted numerical code.
- the physical properties of said chemical elements serving as delocalized information which cannot be discerned with a naked eye of an observer of the article;
- said process comprising the steps of:
- preparing stock solutions with each stock solution having a defined content of one chemical element or of a compound which contains the chemical element provided for the coding;
- and
- mixing the stock solutions in quantities sufficient to create a coded coating composition.
Dependencies are inferred from the claim text.