Simulated security thread by cellulose transparentization
US6607813B2 · kind B2 · utility
16Cited by
35References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Sep 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24934
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A security document is provided comprising a finished cellulosic substrate having at least one transparentized portion formed therein. The transparentized portion comprises a transparentizing composition that is applied so as to define an area of increased transparency in the substrate. The area of increased transparency includes at least one thin line and resembles a simulated security thread. The transparentizing composition can be applied to form thin lines in a variety of configurations on one or both sides of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.