Patent US5516362A successfully refreshed from Google Patents.
US5516362A
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US
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Security marking method and composition
Assignee: Nocopi Technologies Inc
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Filing: 1995-06-05
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Granted: 1996-05-14
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Expires: 2015-06-05
Abstract
Abstract A security marking method and composition wherein a first marking is applied to a surface of a substrate with a mixture of a printing medium and a first composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light. A second composition is added either with the mixture or thereafter, wherein the second composition is reactable with the first composition to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.
Inventors
- 👤 Arshavir Gundjian
- 👤 Abraham Kuruvilla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:10
CPC Classifications
B; B41; B41M; B41M3/00; B41M3/14; B41M3/142; B41M3/144; G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0928
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A security marking method comprising the steps of: applying a first marking to a surface of a substrate with a mixture of a printing medium and a first composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light; and thereafter activating the first marking upon demand with a second composition, wherein the second composition is reactable with the first composition to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.
Claim 2
Dependent Claim
106 words
A security marking method comprising the steps of: applying a first marking to a surface of a substrate with a mixture of a printing medium and a first composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light; and thereafter activating the first marking upon demand with a second composition, wherein the second composition is reactable with the first composition to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.
Claim 3
Dependent Claim
20 words
The method according to claim 1, wherein the step of activating comprises applying the second composition with a marking pen.
Claim 4
Dependent Claim
29 words
The method according to claim 1, wherein the printing medium is a toner and the step of applying comprises printing the first marking with a laser printer or photocopier.
Claim 5
Dependent Claim
24 words
The method according to claim 1, wherein the first marking fluoresces in one color before activation and fluoresces in a different color after activation.
Claim 6
Dependent Claim
126 words
A security marking method comprising the steps of: applying a first marking to a surface of a substrate with a mixture of a printing medium, a first composition and a second composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light, and wherein the first and second compositions are reactable in response to a mechanically applied rubbing action applied to the surface at the first marking on the substrate to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light; and thereafter mechanically applying a rubbing action to the first marking.
Claim 7
Dependent Claim
126 words
A security marking method comprising the steps of: applying a first marking to a surface of a substrate with a mixture of a printing medium, a first composition and a second composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light, and wherein the first and second compositions are reactable in response to a mechanically applied rubbing action applied to the surface at the first marking on the substrate to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light; and thereafter mechanically applying a rubbing action to the first marking.
Claim 8
Dependent Claim
29 words
The method according to claim 5, wherein the printing medium is toner and the step of applying comprises printing the first marking with a laser printer or a photocopier.
Claim 9
Dependent Claim
24 words
The method according to claim 5, wherein the first marking fluoresces in one color before activation and fluoresces in a different color after activation.
Claim 10
Dependent Claim
102 words
A security marking composition comprising: a mixture of a printing medium, a first composition and a second composition, wherein a marking on a substrate made by the mixture is visible to an unaided human eye and is indistinguishable from a marking made with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light, and wherein the first and second compositions are reactable in response to a mechanically applied rubbing action to the marking on the substrate to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.
Claim 11
Dependent Claim
102 words
A security marking composition comprising: a mixture of a printing medium, a first composition and a second composition, wherein a marking on a substrate made by the mixture is visible to an unaided human eye and is indistinguishable from a marking made with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light, and wherein the first and second compositions are reactable in response to a mechanically applied rubbing action to the marking on the substrate to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1999-05-14 | 1999-11-13 | 2000-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-14 | 2003-11-13 | 2004-05-14 | $3760.00 | Window Closed / Lapsed |
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