Patent US5310222A successfully refreshed from Google Patents.
US5310222A
Expired / Lapsed
US
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Optical device
Assignee: De la Rue International Ltd
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Filing: 1990-10-19
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Granted: 1994-05-10
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Expires: 2010-10-19
Abstract
Abstract An optical security device for use on a security article comprises a number of layers including an optically diffracting layer and an at least partially reflective layer which together generate a first image. A non-optically diffracting second image is provided within the device in association with the first image.
Inventors
- 👤 Charles E. Chatwin
- 👤 Ralph Kay
- 👤 Martin C. Gomme
- 👤 David Ezra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:23
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03H1/0252; G06; G06K; G06K19/00; G06K19/02; G06K19/022; G03H1/0005; G03H1/0011; G03H1/024; G03H1/0244; G03H1/04; G03H1/18; G03H2001/187; G03H2250/00; G03H2250/10; G03H2250/36; G03H2250/40; G03H2270/00; G03H2270/52
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
75 words
An optical security device for use on a security article, the device comprising a number of layers including an optically diffracting layer including an embossed layer and an at least partially reflective layer which together generate a first image; and a non-optically diffracting second image defined within the device in association with said first image, wherein said second image is provided at the interface between the embossed layer and said at least partially reflective layer.
Claim 2
Dependent Claim
75 words
An optical security device for use on a security article, the device comprising a number of layers including an optically diffracting layer including an embossed layer and an at least partially reflective layer which together generate a first image; and a non-optically diffracting second image defined within the device in association with said first image, wherein said second image is provided at the interface between the embossed layer and said at least partially reflective layer.
Claim 3
Dependent Claim
13 words
A device according to claim 1, wherein said second image comprises security information.
Claim 4
Dependent Claim
31 words
A device according to claim 2, wherein said second image comprises security indicia selected from the group consisting of lines, line segments, dots, letters, number characters, logos, guilloches, and bar codes.
Claim 5
Dependent Claim
34 words
A device according to claim 2, wherein said second image comprises security item information selected from the group consisting of a serial number uniquely identifying at least one optical device or validity date information.
Claim 6
Dependent Claim
48 words
A device according to claim 1, wherein said second image comprises individualizing information including personal information relative to a prospective holder of an article, said personal information selected from the group consisting of a name, an address, an identification number, an account number, a portrait or a fingerprint.
Claim 7
Dependent Claim
22 words
A device according to claim 1, wherein said second image comprises issuing agency information including the issuing agency's name, address or logo.
Claim 8
Dependent Claim
17 words
A device according to claim 1, wherein said second image is normally invisible under white light radiation.
Claim 9
Dependent Claim
15 words
A device according to claim 1, wherein said second image is formed by a dye.
Claim 10
Dependent Claim
39 words
A device according to claim 1, wherein the second image is provided by an ink selected from the group consisting of colored inks, metallic inks, colored metallic inks, photochromic inks, thermochromic inks, magnetic inks, fluorescing inks and phosphorescing inks.
Claim 11
Dependent Claim
28 words
A device according to claim 1, wherein said first image is selected from the group consisting of holograms, kinegrams, kinoforms, graphical diffractive devices, diffraction gratings, and combinations thereof.
Claim 12
Dependent Claim
15 words
A device according to claim 1, wherein said second image partially overlies said first image.
Claim 13
Dependent Claim
12 words
A security article carrying an optical security device according to claim 1.
Claim 14
Dependent Claim
16 words
A security article according to claim 12, the article comprising a transaction card or credit card.
Claim 15
Dependent Claim
25 words
A device according to claim 1, wherein said second image comprises individualizing information for a group, including personal information relative to a series of holders.
Claim 16
Dependent Claim
15 words
A device according to claim 1, wherein said second image is formed by an ink.
Claim 17
Dependent Claim
85 words
A hot stamping foil comprising a carrier layer and an optical security device releasably secured to said carrier layer, said security device comprising a number of layers including an optically diffracting layer including an embossed layer and an at least partially reflective layer which together generate a first image; and a non-optically diffracting second image defined within the device in association with said first image, wherein said second image is provided at an interface between the embossed layer and said at least partially reflective layer.
Claim 18
Dependent Claim
85 words
A hot stamping foil comprising a carrier layer and an optical security device releasably secured to said carrier layer, said security device comprising a number of layers including an optically diffracting layer including an embossed layer and an at least partially reflective layer which together generate a first image; and a non-optically diffracting second image defined within the device in association with said first image, wherein said second image is provided at an interface between the embossed layer and said at least partially reflective layer.
Claim 19
Independent Claim
80 words
A method of constructing an optical security device for use on a security article, the device comprising a number of layers including an optically diffracting layer having an embossed layer and an at least partially reflective layer which together generate a first image, the method comprising bonding said layer together and providing a non-optically diffracting, second image within the device wherein said second image is provided at an interface between said embossed layer and said at least partially reflective layer.
Claim 20
Independent Claim
80 words
A method of constructing an optical security device for use on a security article, the device comprising a number of layers including an optically diffracting layer having an embossed layer and an at least partially reflective layer which together generate a first image, the method comprising bonding said layer together and providing a non-optically diffracting, second image within the device wherein said second image is provided at an interface between said embossed layer and said at least partially reflective layer.
Claim 21
Dependent Claim
18 words
A method according to claim 17, wherein said second image is provided prior to bonding said layers together.
Claim 22
Dependent Claim
65 words
A method according to claim 17, wherein said second image is printed onto one of said layers of the device by a method selected from the group consisting of gravure, letterpress, lithographic, screen or flexographic printing; impact printing, thermographic, laser induced thermographic, laser engraving, electrophotographic transfer, thermal transfer including laser induced thermal transfer and thermal matrix induced thermal transfer, ink-jet, and ink bubble jet printing.
Claim 23
Dependent Claim
26 words
A method according to claim 17, wherein said second image is provided by diffusing a dye through at least one of said layers of the device.
Claim 24
Dependent Claim
18 words
A device according to claim 17, wherein the second image is formed by selectively destroying the embossed pattern.
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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) | 1997-05-09 | 1997-11-08 | 1998-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-09 | 2001-11-08 | 2002-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-09 | 2005-11-08 | 2006-05-10 | $7700.00 | Window Closed / Lapsed |