Composition and method for hidden identification
First Claim
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1. A method for coded identification of a selected item comprising:
- (a) making up a selected number of groups of highly uniform microbeads of a size of 2-20 microns and normally invisible to the naked eye, each group being made up of highly uniform microbeads of substantially the same uniform size, shape and color with the specific combination of size, shape and color in one group not being repeated in any other group;
(b) transferring highly uniform microbeads from a selected number of groups to the item to be identified such that the item to be identified is characterized by populations of highly uniform microbeads from the selected groups which are highly dispersed in the selected item or in a medium applied thereto, to encode such item according to the combination of size, shape and color of the highly dispersed microbeads transferred; and
(c) examining the item or applied medium comprising the transferred highly dispersed microbeads under light microscope magnification to verify the code established by the highly dispersed microbeads so transferred.
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Abstract
An identification method and identification kit are based upon making up groups of microsized particles normally invisible to the naked eye with each particle in each group being of a selected uniform size, shape and color. Coded identification is established by transferring a population of particles from a selected number of the groups to the item to be identified and then confirming such identification by examining the marked item under high magnification with a light microscope.
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Citations
39 Claims
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1. A method for coded identification of a selected item comprising:
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(a) making up a selected number of groups of highly uniform microbeads of a size of 2-20 microns and normally invisible to the naked eye, each group being made up of highly uniform microbeads of substantially the same uniform size, shape and color with the specific combination of size, shape and color in one group not being repeated in any other group; (b) transferring highly uniform microbeads from a selected number of groups to the item to be identified such that the item to be identified is characterized by populations of highly uniform microbeads from the selected groups which are highly dispersed in the selected item or in a medium applied thereto, to encode such item according to the combination of size, shape and color of the highly dispersed microbeads transferred; and (c) examining the item or applied medium comprising the transferred highly dispersed microbeads under light microscope magnification to verify the code established by the highly dispersed microbeads so transferred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 25, 26, 27, 28, 29, 30, 31)
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13. An identification kit for coded identification of a selected item, comprising:
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(a) a selected number of containers; (b) a group of highly uniform microbeads of a size of 2-20 microns normally invisible to the naked eye within each container made up of highly uniform microbeads of substantially the same uniform microbeads of substantially the same uniform size, shape and color with the specific combination of size, shape and color in one group not being repeated in any other group; and (c) means to apply highly uniform microbeads from a selected number of containers to the item to be identified in the form of highly dispersed populations of microbeads from the selected groups, to encode such item according to the combination of size, shape and color of the highly dispersed microbeads transferred. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. An identified item containing a selected number of groups of highly uniform microbeads of a size of 2-20 microns and normally invisible to the naked eye, highly dispersed in the item or in a medium applied thereto;
- each group being made up of highly uniform microbeads of substantially the same uniform size, shape and color with the specific combination of size, shape and color in one group not being repeated in any other group.
- View Dependent Claims (23, 24, 32, 33, 34, 35, 36, 37, 38, 39)
Specification