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Technique for labeling an object for its identification and/or verification

  • US 5,599,578 A
  • Filed: 11/01/1994
  • Issued: 02/04/1997
  • Est. Priority Date: 04/30/1986
  • Status: Expired due to Fees
First Claim
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1. Method for labeling an object for identification which comprises the step of:

  • applying a mark to said object with a visible ink which contains;

    (a) a first component which is visible to the naked eye; and

    (b) a second component which is invisible to the naked eye and which is one or more of ultraviolet radiation (UV) dye which is visible only in the presence of ultraviolet radiation, an infrared (IR) dye which is visible only in the presence of infrared radiation, an ink which displays a measurable electrical resistivity, or a biologic marker selected from one or more of a protein, amino acid, DNA, polypeptide, hormone, or antibody,said mark having said first component which is visible to the naked eye and said second component which is invisible to the naked eye.

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