Patent US5454598A successfully refreshed from Google Patents.
US5454598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper and copy protected documents
Assignee: DSS Inc
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Filing: 1993-04-19
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Granted: 1995-10-03
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Expires: 2013-04-19
Abstract
Abstract A tamper and copy protected document includesn array of fine blind holes (or, alternatively, of fine perforations) impressed on the document in areas where specific information is to be imprinted. Imprinting of information on the array of holes (or perforations) results in penetration of ink into the fibrous interior of the document, between its surfaces. A resinous coating, applied over the array and over the imprinted information, also penetrates into the interior to encapsulate the ink. A copy protected document is produced by imprinting it with specific alphanumeric information which includes perforations in the imprinted characters.
Inventors
- 👤 David M. Wicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:02
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/30; B42D25/346; B41; B41M; B41M3/00; B41M3/14; B42D25/20; B42D25/21; B42D25/23; B42D25/25; B42D25/29; B42D2033/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
A document sheet with top and bottom surfaces; said top surface including an information area for application thereon of specific inked information; and an array of fine blind holes penetrating said top surface but not said bottom surface in said information area to facilitate penetration and absorption of ink in the interior of said sheet between said surfaces.
Claim 2
Dependent Claim
58 words
A document sheet with top and bottom surfaces; said top surface including an information area for application thereon of specific inked information; and an array of fine blind holes penetrating said top surface but not said bottom surface in said information area to facilitate penetration and absorption of ink in the interior of said sheet between said surfaces.
Claim 3
Dependent Claim
44 words
A document sheet as defined in claim 1, further including: a clear aqueous acrylic resinous coating applied over said array and over said specific information thereon, said coating penetrating said holes and the interior of said sheet between said surfaces to encapsulate said ink.
Claim 4
Dependent Claim
22 words
A document sheet as defined in claim 1, further including: a solid dark area on said bottom surface under said information area.
Claim 5
Dependent Claim
86 words
A document sheet with top and bottom surfaces; said top surface including an information area for application thereon of specific inked information; an array of fine holes through said top surface in said information area to facilitate penetration and absorption of ink in the interior of said sheet between said surfaces; and a clear aqueous acrylic resinous coating applied over said array and over said specific information thereon, said coating penetrating said holes and the interior of said sheet between said surfaces to encapsulate said ink.
Claim 6
Dependent Claim
86 words
A document sheet with top and bottom surfaces; said top surface including an information area for application thereon of specific inked information; an array of fine holes through said top surface in said information area to facilitate penetration and absorption of ink in the interior of said sheet between said surfaces; and a clear aqueous acrylic resinous coating applied over said array and over said specific information thereon, said coating penetrating said holes and the interior of said sheet between said surfaces to encapsulate said ink.
Claim 7
Independent Claim
76 words
A method of producing a tamper protected document, including the following steps, taken in either sequence: (a) applying to a document sheet having top and bottom surfaces an array of fine blind holes penetrating said top surface but not said bottom surface, forming an information area to receive specific inked information; and (b) imprinting specific information on said information area, said holes enhancing the penetration of ink into the interior of said sheet between said surfaces.
Claim 8
Independent Claim
76 words
A method of producing a tamper protected document, including the following steps, taken in either sequence: (a) applying to a document sheet having top and bottom surfaces an array of fine blind holes penetrating said top surface but not said bottom surface, forming an information area to receive specific inked information; and (b) imprinting specific information on said information area, said holes enhancing the penetration of ink into the interior of said sheet between said surfaces.
Claim 9
Dependent Claim
23 words
A method as defined in claim 5, further including, after step (a), the additional step: (aa) extending said holes through said bottom surface.
Claim 10
Independent Claim
109 words
A method of producing a tamper protected document, including the following steps, of which steps (a) and (b) may be taken in either sequence: (a) applying to a document sheet having top and bottom surfaces an array of fine holes through said top surface, forming an information area to receive specific inked information; (b) imprinting specific information on said information area, said holes enhancing the penetration of ink into the interior of said sheet between said surfaces; and (c) applying a resinous coating over said array and over said specific information thereon to penetrate said holes and the interior of said sheet between said surfaces to encapsulate said ink.
Claim 11
Independent Claim
109 words
A method of producing a tamper protected document, including the following steps, of which steps (a) and (b) may be taken in either sequence: (a) applying to a document sheet having top and bottom surfaces an array of fine holes through said top surface, forming an information area to receive specific inked information; (b) imprinting specific information on said information area, said holes enhancing the penetration of ink into the interior of said sheet between said surfaces; and (c) applying a resinous coating over said array and over said specific information thereon to penetrate said holes and the interior of said sheet between said surfaces to encapsulate said ink.
Claim 12
Dependent Claim
23 words
A method as defined in claim 7, further including, after step (a), the additional step: (aa) extending said holes through said bottom surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-02 | 1999-04-03 | 1999-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-02 | 2003-04-03 | 2003-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-02 | 2007-04-03 | 2007-10-03 | $7700.00 | Window Closed / Lapsed |