Patent US5367386A successfully refreshed from Google Patents.
Patent US6987861B2 successfully refreshed from Google Patents.
US6987861B2
Expired / Lapsed
US
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Security arrangements for printed documents
Assignee: Digimarc Corp
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Filing: 2002-03-19
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Granted: 2006-01-17
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Expires: 2022-03-19
Abstract
Abstract A security feature, by which a genuine document can readily be visually distinguished from a reproduction, employs finely detailed, laterally spaced structures to yield the illusion of a 3D texture. When replicated using commonly-available scanning or printing devices, the fine detail is lost, and with it the 3D illusion.
Inventors
- 👤 Geoffrey B. Rhoads
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:57
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/001; G09G3/003; G06; G06F; G06F3/00; G06F3/14; G06F3/1423; G09G3/20; G09G3/34; G09G3/36; G09G3/3611
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
86 words
A method for generating 2D banknote artwork, comprising: generating a first set of data specifying a desired 3D texture topology; from the first set of data, generating a second set of data specifying lateral feature spacing as a function of 2D location; providing one or more feature shapes; forming a texture pattern comprised of pairings of said feature shapes, the pairing distances being set as a function of location in accordance with the second set of data; and combining the texture pattern with traditional banknote artwork.
Claim 2
Independent Claim
86 words
A method for generating 2D banknote artwork, comprising: generating a first set of data specifying a desired 3D texture topology; from the first set of data, generating a second set of data specifying lateral feature spacing as a function of 2D location; providing one or more feature shapes; forming a texture pattern comprised of pairings of said feature shapes, the pairing distances being set as a function of location in accordance with the second set of data; and combining the texture pattern with traditional banknote artwork.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the desired 3D texture topology defines a surface texture like that of felt.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the desired 3D texture topology defines a surface texture like that of carpet.
Claim 5
Dependent Claim
35 words
The method of claim 1 wherein the desired 3D texture topology comprises a surface that appears, in some locations, to be above the plane of a substrate on which the artwork is to be printed.
Claim 6
Dependent Claim
35 words
The method of claim 4 wherein the desired 3D texture topology comprises a surface that appears, in some locations, to be below the plane of a substrate on which the artwork is to be printed.
Claim 7
Dependent Claim
35 words
The method of claim 1 wherein the desired 3D texture topology comprises a surface that appears, in some locations, to be below the plane of a substrate on which the artwork is to be printed.
Claim 8
Dependent Claim
19 words
The method of claim 1 wherein said feature shapes have maximal dimensions less than 10 thousandths of an inch.
Claim 9
Dependent Claim
21 words
The method of claim 1 wherein said feature shapes have maximal dimensions of between 0.5 and 10 thousandths of an inch.
Claim 10
Dependent Claim
10 words
The method of claim 1 wherein said features comprise lines.
Claim 11
Dependent Claim
11 words
The method of claim 1 wherein said features comprise branching structures.
Claim 12
Dependent Claim
31 words
The method of claim 1 wherein certain of said paired feature shapes are spaced a distance apart horizontally, and certain of said paired feature shapes are spaced a distance apart vertically.
Claim 13
Dependent Claim
23 words
The method of claim 1 wherein an illusion of texture associated with viewing of said texture pattern shifts if the artwork is rotated.
Claim 14
Dependent Claim
44 words
The method of claim 1 wherein said texture pattern yields a first illusion of non-flat texture if the artwork is viewed at a first orientation, and yields a second, different, illusion of non-flat texture if the artwork is viewed at a second, different, orientation.
Claim 15
Dependent Claim
22 words
The method of claim 1 wherein the features are sized and/or spaced too close for commercially-available printing and scanning technologies to replicate.
Claim 16
Dependent Claim
22 words
The method of claim 1 wherein the features are sized and/or spaced too close for faithful reproduction using a 1200 dpi scanner.
Claim 17
Dependent Claim
16 words
The method of claim 1 that further includes printing a banknote, using said generated banknote artwork.
Claim 18
Dependent Claim
10 words
A banknote produced by the method of claim 16 .
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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) | 2009-01-16 | 2009-07-18 | 2010-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-16 | 2013-07-18 | 2014-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-16 | 2017-07-18 | 2018-01-17 | $7700.00 | Window Closed / Lapsed |