Patent US4726608A successfully refreshed from Google Patents.
US4726608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information bearing article with tamper resistant scratch-off opaque coating
Assignee: SCIENTIC GAMES Inc
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Filing: 1986-08-05
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Granted: 1988-02-23
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Expires: 2006-08-05
Abstract
Abstract An indicia bearing article, such as a lottery ticket, contest form or other document, for example, is provided. The article includes an indicia bearing sheet and an opaque coating thereover for hiding the indicia. The opaque coating contains metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in the opaque coating and hidden beneath the metal particles, for providing visual evidence of exposure to the solvent.
Inventors
- 👤 Bradley W. Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
G; G07; G07C; G07C15/00; G07C15/005; A; A63; A63F; A63F3/00; A63F3/06; A63F3/065; A63F3/0665; G07D; G07D7/00; G07D7/14; G09; G09F; G09F23/00; G09F2023/0016; Y; Y10; Y10S; Y10S283/00; Y10S283/901; Y10S283/903
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
70 words
An opaque abrasive removable coating applied to an article of the type including an indicia bearing surface, for providing a visual indication of exposure to at least one solvent, said opaque coating comprising a binder having metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in said binder and hidden beneath said metal particles, for providing visual evidence of exposure to said solvent.
Claim 2
Dependent Claim
70 words
An opaque abrasive removable coating applied to an article of the type including an indicia bearing surface, for providing a visual indication of exposure to at least one solvent, said opaque coating comprising a binder having metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in said binder and hidden beneath said metal particles, for providing visual evidence of exposure to said solvent.
Claim 3
Dependent Claim
11 words
The coating of claim 1 wherein said metal particles comprise aluminum.
Claim 4
Dependent Claim
14 words
The coating of claim 1 wherein said metal particles comprise ink grade aluminum powder.
Claim 5
Dependent Claim
17 words
The coating of claim 1 wherein said metal particles are at the surface of said opaque coating.
Claim 6
Dependent Claim
11 words
The coating of claim 1 wherein said binder is latex resin.
Claim 7
Dependent Claim
14 words
The coating of claim 5 wherein said latex resin is soluble in hydrocarbon solvents.
Claim 8
Dependent Claim
13 words
The coating of claim 5 wherein said latex resin is soluble in water.
Claim 9
Dependent Claim
12 words
The coating of claim 7 wherein said dye is soluble in oil.
Claim 10
Dependent Claim
13 words
The coating of claim 1 wherein said dye is soluble in hydrocarbon solvents.
Claim 11
Dependent Claim
14 words
The coating of claim 1 wherein said dye is soluble in aliphatic hydrocarbon solvents.
Claim 12
Dependent Claim
13 words
The coating of claim 1 wherein said dye is soluble in aromatic solvents.
Claim 13
Dependent Claim
12 words
The coating of claim 1 wherein said dye is soluble in water.
Claim 14
Dependent Claim
25 words
The coating of claim 1 wherein said at least one dye comprises a water soluble dye, a hydrocarbon soluble dye and an alcohol soluble dye.
Claim 15
Dependent Claim
32 words
The coating of claim 1 wherein said dye sublimates sufficiently to produce a visual indication of said dye when exposed to a temperature of about 260° F. when in said opaque coating.
Claim 16
Dependent Claim
20 words
The coating of claim 1 wherein said at least one dye is soluble in water, mineral spirits and aromatic solvents.
Claim 17
Dependent Claim
85 words
An indicia bearing article of the type having hidden indicia not readily detectable except by irreversible alteration of said article, said article comprising: an indicia bearing surface; an opaque abrasive removable coating over at least a portion of said indicia for hiding said indicia, said opaque coating comprising a binder containing metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in said binder and hidden beneath said metal particles, for providing visual evidence of exposure to said solvent.
Claim 18
Dependent Claim
85 words
An indicia bearing article of the type having hidden indicia not readily detectable except by irreversible alteration of said article, said article comprising: an indicia bearing surface; an opaque abrasive removable coating over at least a portion of said indicia for hiding said indicia, said opaque coating comprising a binder containing metal particles and at least one undissolved dye soluble in at least one solvent and dispersed in said binder and hidden beneath said metal particles, for providing visual evidence of exposure to said solvent.
Claim 19
Dependent Claim
11 words
The article of claim 16 wherein said metal particles comprise aluminum.
Claim 20
Dependent Claim
14 words
The article of claim 16 wherein said metal particles comprise ink grade aluminum powder.
Claim 21
Dependent Claim
17 words
The article of claim 16 wherein said metal particles are at the surface of said opaque coating.
Claim 22
Dependent Claim
11 words
The article of claim 16 wherein said binder is latex resin.
Claim 23
Dependent Claim
14 words
The article of claim 20 wherein said latex resin is soluble in hydrocarbon solvents.
Claim 24
Dependent Claim
13 words
The article of claim 20 wherein said latex resin is soluble in water.
Claim 25
Dependent Claim
12 words
The article of claim 22 wherein said dye is soluble in oil.
Claim 26
Dependent Claim
13 words
The article of claim 16 wherein said dye is soluble in hydrocarbon solvents.
Claim 27
Dependent Claim
14 words
The article of claim 16 wherein said dye is soluble in aliphatic hydrocarbon solvents.
Claim 28
Dependent Claim
13 words
The article of claim 16 wherein said dye is soluble in aromatic solvents.
Claim 29
Dependent Claim
12 words
The article of claim 16 wherein said dye is soluble in water.
Claim 30
Dependent Claim
25 words
The article of claim 16 wherein said at least one dye comprises a water soluble dye, a hydrocarbon soluble dye and an alcohol soluble dye.
Claim 31
Dependent Claim
32 words
The article of claim 16 wherein said dye sublimates sufficiently to produce a visual indication of said dye when exposed to a temperature of about 260° F. when in said opaque coating.
Claim 32
Dependent Claim
20 words
The article of claim 16 wherein said at least one dye is soluble in water, mineral spirits and aromatic solvents.
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |