Double metal security element having transparent pattern
US10960702B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/29
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A security element includes a transparent film, a first layer and a second layer. The first layer includes a first metal arranged on the transparent film in a first pattern. The second layer includes a second metal being a baser metal than the first metal arranged over the first layer in a second pattern. Each of the first and second patterns is composed of metallic regions and metal-free regions. The metal-free regions of the second pattern overlap with the metal-free regions of the first pattern. The metallic regions of the first pattern overlap with the metal-free regions of the second pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.