US5605738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper resistant system using ultraviolet fluorescent chemicals
Assignee: Angstrom Technologies Inc
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Filing: 1993-09-30
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Granted: 1997-02-25
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Expires: 2013-09-30
Abstract
Abstract A release agent is first applied to a target article and on top of the release agent is applied an ultraviolet radiation fluorescent material to enable fraud detection. To prevent fraud, a security label may also be used comprising a label substrate, a release layer, a layer of ultraviolet radiation fluorescent material, and an adhesive layer for adhering to a target article. When the substrate is peeled off, part of the ultraviolet sensitive material will be peeled off also to enable detection.
Inventors
- 👤 William G. McGinness
- 👤 Louis Liang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:25
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/0291; G09F3/0292; B; B41; B41M; B41M3/00; B41M3/14; B41M3/144; Y; Y10; Y10S; Y10S428/00; Y10S428/916; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31801
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
72 words
A method for marking articles for enabling the detection of fraud through tampering of articles, comprising: printing a first layer of a release agent over the article; and forming a second layer of a material in a predetermined first pattern over the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation to enable detection of tampering.
Claim 2
Independent Claim
72 words
A method for marking articles for enabling the detection of fraud through tampering of articles, comprising: printing a first layer of a release agent over the article; and forming a second layer of a material in a predetermined first pattern over the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation to enable detection of tampering.
Claim 3
Dependent Claim
18 words
The method of claim 1, wherein said applying step applies wax, polyolefins, or non-vinyl varnish over the article.
Claim 4
Dependent Claim
38 words
The method of claim 1, said material including ultraviolet radiation fluorescent chemical, said method further comprising preparing a suspension of said ultraviolet radiation fluorescent chemical, wherein said forming step includes applying the suspension over the release agent layer.
Claim 5
Dependent Claim
33 words
The method of claim 3, wherein said preparing step prepares said suspension by suspending said chemical in an oleoresinous varnish printing vehicle, or in a petroleum based wax or organic wax printing vehicle.
Claim 6
Dependent Claim
33 words
The method of claim 3, said preparing step loads the suspension with 5% or more of said chemical so that the material is at least partially visible in the absence of ultraviolet radiation.
Claim 7
Dependent Claim
27 words
The method of claim 3, said preparing step loads the suspension with a second chemical so that the material is visible in the absence of ultraviolet radiation.
Claim 8
Independent Claim
63 words
The method of claims 3, said article having a predetermined finish, wherein said preparing step prepares the suspension by suspending said chemical in a carrier, said method further comprising selecting a carrier that results in a finish less similar in glossiness to the finish of the article so that the material is at least more partially visible in the absence of ultraviolet radiation.
Claim 9
Dependent Claim
59 words
The method of claim 3, said article having a predetermined finish, wherein said preparing step prepares the suspension by suspending said chemical in a carrier, said method further comprising selecting a carrier that results in a finish similar in glossiness to the finish of the article so that the material is less visible in the absence of ultraviolet radiation.
Claim 10
Independent Claim
28 words
The method of clam 3, said preparing step including adding to the suspension printing aids to alter a surface contrast ratio of the suspension when it is dried.
Claim 11
Independent Claim
28 words
The method of clam 3, said preparing step including adding to the suspension printing aids to alter a surface contrast ratio of the suspension when it is dried.
Claim 12
Dependent Claim
26 words
The method of claim 9, further comprising checking the ratio of transmitted light to scattered light of the carrier after it is dried using a goniophotometer.
Claim 13
Dependent Claim
35 words
The method of claim 1, further comprising the step of providing a varnish layer over the article before or after the forming step to render the material at least more or less partially visible respectively.
Claim 14
Dependent Claim
15 words
The method of claim 1, said forming step including printing said second layer of material.
Claim 15
Dependent Claim
25 words
The method of claim 1, further comprising detecting said first pattern by means of a UV scanner to detect fraud through tampering of the article.
Claim 16
Dependent Claim
32 words
The method of claim 1, wherein said forming forms the second layer so that the layer is visible or partially visible in the absence of ultraviolet light to facilitate unaided visual authentication.
Claim 17
Dependent Claim
16 words
The method of claim 1, wherein said forming forms the second layer on said first layer.
Claim 18
Independent Claim
83 words
A method for safeguarding articles against tampering, comprising: applying a first layer of a release agent over an article; forming a second layer of a material in a predetermined first pattern over the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation; and applying an authenticating layer over said second layer, so that tampering is detectable when the material exhibits a pattern different from the first pattern.
Claim 19
Independent Claim
83 words
A method for safeguarding articles against tampering, comprising: applying a first layer of a release agent over an article; forming a second layer of a material in a predetermined first pattern over the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation; and applying an authenticating layer over said second layer, so that tampering is detectable when the material exhibits a pattern different from the first pattern.
Claim 20
Dependent Claim
16 words
The method of claim 16, said applying comprising signing an authenticating signature over said second layer.
Claim 21
Dependent Claim
23 words
The method of claim 16, further comprising detecting said first pattern by means of a UV scanner to detect tampering of the article.
Claim 22
Dependent Claim
31 words
The method of claim 16, said forming forms the second layer so that the layer is visible or partially visible in the absence of ultraviolet light to facilitate unaided visual authentication.
Claim 23
Dependent Claim
17 words
The method of claim 16, said applying comprising forming a visible ink layer over said second layer.
Claim 24
Dependent Claim
81 words
An article protected against tampering, comprising: a first layer of a release agent over an article; a second layer of a material in a predetermined first pattern in contact with the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation; and a third authenticating layer over said second layer, so that tampering is detectable when the material exhibits a pattern different from the first pattern.
Claim 25
Dependent Claim
81 words
An article protected against tampering, comprising: a first layer of a release agent over an article; a second layer of a material in a predetermined first pattern in contact with the release agent layer so that the first layer is between the article and the second layer, wherein the material fluoresces in response to ultraviolet radiation; and a third authenticating layer over said second layer, so that tampering is detectable when the material exhibits a pattern different from the first pattern.
Claim 26
Dependent Claim
13 words
The article of claim 21, said third layer comprising an authenticating signature pattern.
Claim 27
Dependent Claim
37 words
The article of claim 21, said second layer containing a second chemical or having a surface so that the second layer is visible or partially visible in the absence of ultraviolet light to facilitate unaided visual authentication.
Claim 28
Dependent Claim
12 words
The article of claim 21, said third layer comprising a visible ink.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-25 | 2000-08-26 | 2001-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-25 | 2004-08-26 | 2005-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-25 | 2008-08-26 | 2009-02-25 | $7700.00 | Window Closed / Lapsed |