Method for masking confidential written material
US5324380A · kind A · utility
10Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for determining whether confidential written material has been tampered with. The disclosed invention comprises the following steps: applying a removable adhesive to one side of an opaque paper masking label; cutting intermittent slits in said opaque paper masking label; embossing the adhesive side of said slit opaque paper masking label over confidential written material to be masked such that when said embossed opaque paper masking is removed from said material to be masked, said opaque paper masking label fragments and disintegrates due to the intermittent slits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.