Patent US5281480A successfully refreshed from Google Patents.
US5281480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically variable multilayer structure on flexible web
Assignee: Viavi Solutions Inc
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Filing: 1992-06-22
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Granted: 1994-01-25
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Expires: 2012-06-22
Abstract
Abstract Articles and methods for forming optically variable thin film flakes and replicated coatings having preselected optical properties. The articles generally comprise a flexible web of material and an optically variable thin film coating formed on one surface of the web. The optically variable coating is separated from the web to form optically variable thin film flakes. The flakes are disposed in ink and paint vehicles to provide optically variable inks, paints and the like.
Inventors
- 👤 Roger W. Phillips
- 👤 Thomas Mayer
- 👤 Gary S. Ash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:20
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0015; C09C1/0051; B; B05; B05D; B05D1/00; B05D1/28; B05D1/286; B05D5/00; B05D5/06; B41; B41M; B41M3/00; B41M3/14; C03; C03C; C03C17/00; C09C1/0078; C09D; C09D11/00; C09D11/50; F; F24; F24S; F24S70/00; F24S70/20; F24S70/225; C01; C01P; C01P2004/00; C01P2004/54; C09C2200/00; C09C2200/10; C09C2200/1054; C09C2200/24; C09C2220/00; C09C2220/20; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/916; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/258; Y10T428/259; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31504; Y10T428/31507; Y10T428/31786; Y10T428/31797; Y10T428/31855
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
In a product for producing a collection of optically variable thin film flakes adapted to be added to a liquid medium for producing a predetermined optical response to radiation incident on a surface of a solidifed version of said medium, a flexible web of material having a surface, a release coat disposed on said surface and an optically variable multilayer structure disposed on said release coat on said web and comprising at least two metal layers with at least one being opaque and at least one being semi-transparent and at least one dielectric layer with an index of refraction of 1.65 or less to provide a color shift between two distinct colors at first and second angles of incident light.
Claim 2
Dependent Claim
120 words
In a product for producing a collection of optically variable thin film flakes adapted to be added to a liquid medium for producing a predetermined optical response to radiation incident on a surface of a solidifed version of said medium, a flexible web of material having a surface, a release coat disposed on said surface and an optically variable multilayer structure disposed on said release coat on said web and comprising at least two metal layers with at least one being opaque and at least one being semi-transparent and at least one dielectric layer with an index of refraction of 1.65 or less to provide a color shift between two distinct colors at first and second angles of incident light.
Claim 3
Dependent Claim
121 words
In a product for producing a collection of optically variable thin film flakes adapted to be added to a liquid medium for producing a predetermined optical response to radiation incident on a surface of a solidified version of said medium, a flexible web of material having a surface, a release coat deposited on said surface and a symmetrical optically variable multilayer structure disposed on said release coat on said web and comprising at least two metal layers with at least one being opaque and at least one being semitransparent and at least one dielectric layer with an index of refraction of 1.65 or less to provide a color shift between two distinct colors at first and second angles of incident light.
Claim 4
Dependent Claim
121 words
In a product for producing a collection of optically variable thin film flakes adapted to be added to a liquid medium for producing a predetermined optical response to radiation incident on a surface of a solidified version of said medium, a flexible web of material having a surface, a release coat deposited on said surface and a symmetrical optically variable multilayer structure disposed on said release coat on said web and comprising at least two metal layers with at least one being opaque and at least one being semitransparent and at least one dielectric layer with an index of refraction of 1.65 or less to provide a color shift between two distinct colors at first and second angles of incident light.
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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |