Method for marking items for identification
The present invention relates to an improved method for marking individual microparticles of a substance for the purpose of subsequent identification. A further aspect of the invention relates to the microparticles themselves which include therein a near infrared fluorophore. A method for marking or...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
13.08.2002
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| Online Access | Get full text |
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| Summary: | The present invention relates to an improved method for marking individual microparticles of a substance for the purpose of subsequent identification. A further aspect of the invention relates to the microparticles themselves which include therein a near infrared fluorophore.
A method for marking or tagging individual microparticles using a near infrared fluorophore for identification is provided. The near infrared fluorophore is included with one or more layers comprising the microparticle. Desirably, the coating layers contain colorants such as dyes and/or pigments which increases the total possible combinations that may be used to identify the marked material. There is further provided a method for marking a material using these microparticles containing a near infrared fluorophore. |
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