Recyclable instant scratch off lottery ticket
US5542710A · kind A · utility
31Cited by
36References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Sep 24, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/903
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A piece of printed material has preprinted, hidden data and includes a structure which prevents premature revealing of the hidden data. For example, an instant scratch-off lottery ticket according to the invention includes a substrate, an ink layer disposed on the substrate, the ink layer including hidden lottery data. An elemental-metal-free ink-receptive layer is provided between the ink layer and the substrate, whereby the metal-free layer prevents migration of ink from the ink layer through the substrate when the substrate has been contacted with a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.