Security marking and security mark
First Claim
1. An identity marking, comprising:
- a patterned layer of conductive material on an object, wherein the pattern of conductive material comprises identifying indicia that can be read by a conductivity meter.
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Accused Products
Abstract
The application discloses a security mark consisting of a plurality of layers, of which the cover layers are highly conductive films and the layers of the card core are films of varying transparency. One layer carries information, which can be read directly, if desired, above a security print, while the transparent conductive layer has an additional security markings, such as biometric or product identifiers marking which can be read conductively only with the aid of a special reader. All the layers consist of polymers, papers or mixtures which can be fused together to form a laminate which is fused together. The conductive layers form conductive traces which may be formed with single-walled or multi walled nano tubes or they can be formed from multiple layers or dispersions containing, carbon nano tubes, carbon nano tubes/antimony tin oxide, carbon nano tubes/platinum, or carbon nano tubes/silver, carbon, silver or carbon nano tubes/silver-cloride. An alternative layer can be formed from a separate conductive layer or suitable dispersion and the encoding accomplished by overlaying a nonconductive trace.
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Citations
78 Claims
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1. An identity marking, comprising:
a patterned layer of conductive material on an object, wherein the pattern of conductive material comprises identifying indicia that can be read by a conductivity meter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 73, 76, 77, 78)
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25. An identity marking contained in the first layer of a security card, comprising:
- a conductive material containing at least one element of identifying indicia that can be read by conductivity and the conductive material is mixed with fluorescence dye.
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26. An identity marking contained in a layer of a security card, comprising:
- a conductive material containing at least one element of identifying indicia that can be read by conductivity and the conductive material is mixed with infrared dye.
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57. A multi-layered structure comprising:
- an electrically conductive film comprising a plurality of nano tubes with an outer diameter of less than 15 nm; and
a polymeric layer disposed on at least a portion of said electrically conductive film. - View Dependent Claims (58, 59, 60, 61, 62, 63)
- an electrically conductive film comprising a plurality of nano tubes with an outer diameter of less than 15 nm; and
- 64. A dispersion of nano tubes comprising a plurality of nano tubes with an outer diameter of less than 15 nm.
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74. An identity marking contained in a layer of a security marking, comprising:
a conductive material containing at least one element of identifying indicia that can be read by conductivity. - View Dependent Claims (75)
Specification