US5595590A
Expired / Lapsed
US
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Method and compositions for authenticating a product or document
Assignee: Nocopi Technologies Inc
•
Filing: 1995-05-31
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Granted: 1997-01-21
•
Expires: 2015-05-31
Abstract
Abstract A method and compositions for authenticating a document or article comprises applying a mixture of a carrier, a leuco dye and an activator to a surface of a document or article, wherein the leuco dye and activator react in response to a rubbing force applied to the surface to change color and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups and authenticating the document or article by applying a rubbing force to the surface to effect a color change.
Inventors
- 👤 Blake Q. Belding
- 👤 JoAnn Silknitter
- 👤 Kevin B. Stevenson
- 👤 Terry W. Stovold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:35
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/04; B; B41; B41M; B41M3/00; B41M3/14; B41M3/142; B41M5/00; B41M5/124; G03G21/043
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
44 words
A composition for authenticating a document or article comprising a mixture of a carrier, a leuco dye and an activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 2
Dependent Claim
44 words
A composition for authenticating a document or article comprising a mixture of a carrier, a leuco dye and an activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 3
Dependent Claim
19 words
The composition according to claim 1, wherein the mixture is non-pressure sensitive and reacts in response to friction heat.
Claim 4
Dependent Claim
20 words
The composition according to claim 1, wherein the ratio of activator to leuco dye is from about 1:1 to 8:1.
Claim 5
Dependent Claim
16 words
The composition according to claim 1, wherein the ratio of activator to leuco dye is 4:1.
Claim 6
Dependent Claim
16 words
The composition according to claim 1, wherein the carrier comprises a binder, water and a surfactant.
Claim 7
Dependent Claim
52 words
The composition according to claim 1, wherein the activator comprises ##STR6## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 8
Dependent Claim
50 words
The composition according to claim 1, wherein the activator comprises ##STR7## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 9
Dependent Claim
63 words
The composition according to claim 1, wherein the activator comprises ##STR8## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 10
Dependent Claim
17 words
The composition according to claim 1, wherein the activator comprises ##STR9## where R=H, alkyl or aryl derivatives.
Claim 11
Dependent Claim
16 words
The composition according to claim 1, wherein the activator comprises ##STR10## where R=hydroxyalkyl or hydroxyaryl derivatives.
Claim 12
Dependent Claim
45 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a leuco dye and an activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 13
Dependent Claim
45 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a leuco dye and an activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 14
Dependent Claim
20 words
The printing medium according to claim 11, wherein the mixture is non-pressure sensitive and reacts in response to friction heat.
Claim 15
Dependent Claim
21 words
The printing medium according to claim 11, wherein the ratio of activator to leuco dye is from about 1:1 to 8:1.
Claim 16
Dependent Claim
17 words
The printing medium according to claim 11, wherein the ratio of activator to leuco dye is 4:1.
Claim 17
Dependent Claim
53 words
The printing medium according to claim 11, wherein the activator comprises ##STR11## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 18
Dependent Claim
51 words
The printing medium according to claim 11, wherein the activator comprises ##STR12## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 19
Dependent Claim
64 words
The printing medium according to claim 11, wherein the activator comprises ##STR13## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 20
Dependent Claim
18 words
The printing medium according to claim 11, wherein the activator comprises ##STR14## where R=H, alkyl or aryl derivatives.
Claim 21
Dependent Claim
17 words
The printing medium according to claim 11, wherein the activator comprises ##STR15## where R=hydroxyalkyl or hydroxyaryl derivatives.
Claim 22
Dependent Claim
62 words
A composition for authenticating a document or article comprising a mixture of a carrier, a leuco dye having a melting point of greater than 115° C. and an activator having a melting point of greater than 115° C. and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 23
Dependent Claim
62 words
A composition for authenticating a document or article comprising a mixture of a carrier, a leuco dye having a melting point of greater than 115° C. and an activator having a melting point of greater than 115° C. and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 24
Dependent Claim
16 words
The composition according to claim 20, wherein the carrier has a melting point above 115° C.
Claim 25
Dependent Claim
19 words
The composition according to claim 20, wherein the ratio of activator to leuco dye is from 1:1 to 8:1.
Claim 26
Dependent Claim
16 words
The composition according to claim 20, wherein the ratio of activator to leuco dye is 4:1.
Claim 27
Dependent Claim
16 words
The composition according to claim 20, wherein the carrier comprises a binder, water and a surfactant.
Claim 28
Dependent Claim
52 words
The composition according to claim 20, wherein the activator comprises ##STR16## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 29
Dependent Claim
50 words
The composition according to claim 20, wherein the activator comprises ##STR17## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 30
Dependent Claim
63 words
The composition according to claim 20, wherein the activator comprises ##STR18## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 31
Dependent Claim
17 words
The composition according to claim 20, wherein the activator comprises ##STR19## where R=H, alkyl or aryl derivatives.
Claim 32
Dependent Claim
16 words
The composition according to claim 20, wherein the activator comprises ##STR20## where R=hydroxyalkyl or hydroxyaryl derivatives.
Claim 33
Dependent Claim
63 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a leuco dye having a melting point of greater than 115° C. and an activator having a melting point of greater than 115° C. and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 34
Dependent Claim
63 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a leuco dye having a melting point of greater than 115° C. and an activator having a melting point of greater than 115° C. and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 35
Dependent Claim
17 words
The printing medium according to claim 30, wherein the ink has a melting point above 115° C.
Claim 36
Dependent Claim
20 words
The printing medium according to claim 30, wherein the ratio of activator to leuco dye is from 1:1 to 8:1.
Claim 37
Dependent Claim
17 words
The printing medium according to claim 30, wherein the ratio of activator to leuco dye is 4:1.
Claim 38
Dependent Claim
53 words
The printing medium according to claim 30, wherein the activator comprises ##STR21## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 39
Dependent Claim
51 words
The printing medium according to claim 30, wherein the activator comprises ##STR22## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 40
Dependent Claim
64 words
The printing medium according to claim 30, wherein the activator comprises ##STR23## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 41
Dependent Claim
18 words
The printing medium according to claim 30, wherein the activator comprises ##STR24## where R=H, alkyl or aryl derivatives.
Claim 42
Dependent Claim
17 words
The printing medium according to claim 30, wherein the activator comprises ##STR25## where R=hydroxyalkyl or hydroxyaryl derivatives.
Claim 43
Dependent Claim
48 words
A composition for authenticating a document or article comprising a mixture of a carrier, a wet micronized leuco dye and a wet micronized activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 44
Dependent Claim
48 words
A composition for authenticating a document or article comprising a mixture of a carrier, a wet micronized leuco dye and a wet micronized activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 45
Dependent Claim
16 words
The composition according to claim 39, wherein the activator has a melting point above 115° C.
Claim 46
Dependent Claim
19 words
The composition according to claim 39, wherein the ratio of activator to leuco dye is from 1:1 to 8:1.
Claim 47
Dependent Claim
16 words
The composition according to claim 39, wherein the ratio of activator to leuco dye is 4:1.
Claim 48
Dependent Claim
16 words
The composition according to claim 39, wherein the carrier comprises a binder, water and a surfactant.
Claim 49
Dependent Claim
52 words
The composition according to claim 39, wherein the activator comprises ##STR26## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 50
Dependent Claim
50 words
The composition according to claim 39, wherein the activator comprises ##STR27## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 51
Dependent Claim
63 words
The composition according to claim 39, wherein the activator comprises ##STR28## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 52
Dependent Claim
17 words
The composition according to claim 39, wherein the activator comprises ##STR29## where R=H, alkyl or aryl derivatives.
Claim 53
Dependent Claim
16 words
The composition according to claim 39, wherein the activator comprises ##STR30## where R=hydroxyalkyl or hydroxyaryl derivatives.
Claim 54
Dependent Claim
49 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a wet micronized leuco dye and a wet micronized activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 55
Dependent Claim
49 words
A printing medium for authenticating a document or article comprising a mixture of an ink, a wet micronized leuco dye and a wet micronized activator and wherein the activator is at least one selected from the group consisting of amidophenol, anilides with hydroxyl groups and benzoamides with hydroxyl groups.
Claim 56
Dependent Claim
17 words
The printing medium according to claim 49, wherein the activator has a melting point above 115° C.
Claim 57
Dependent Claim
20 words
The printing medium according to claim 49, wherein the ratio of activator to leuco dye is from 1:1 to 8:1.
Claim 58
Dependent Claim
17 words
The printing medium according to claim 49, wherein the ratio of activator to leuco dye is 4:1.
Claim 59
Dependent Claim
53 words
The printing medium according to claim 49, wherein the activator comprises ##STR31## wherein R 1 is a phenolic derivative or--C 6 H 4 OH; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 60
Dependent Claim
51 words
The printing medium according to claim 49, wherein the activator comprises ##STR32## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is H, a branched or unbranched alkyl group or an aryl group; and R 3 is H, a branched or unbranched alkyl group or an aryl group.
Claim 61
Dependent Claim
64 words
The printing medium according to claim 49, wherein the activator comprises ##STR33## wherein R 1 is a o-, m-, or p-phenolic group; R 2 is a branched or unbranched alkyl group or an aryl group; R 3 is H, a branched or unbranched alkyl group or an aryl group; and R 4 is H, a branched or unbranched alkyl group or an aryl group.
Claim 62
Dependent Claim
18 words
The printing medium according to claim 49, wherein the activator comprises ##STR34## where R=H, alkyl or aryl derivatives.
Claim 63
Dependent Claim
17 words
The printing medium according to claim 49, wherein the activator comprises ##STR35## where R=hydroxyalkyl or hydroxyaryl derivatives.
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