Hologram game card
US5037101A · kind A · utility
Inventor
Key dates
| Filing date | Jun 19, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Jun 19, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/903
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A hologram game card having a laminate of PA1 (i) at least one hologram-containing layer containing at least one hologram, PA1 (ii) a backing layer on which the hologram-containing layer(s) are mounted, and PA1 (iii) a covering layer covering a side of the hologram-containing layer(s) opposite the backing layer, wherein PA1 (a) the covering layer is opaque with respect to wavelengths of visible light usable to view the hologram(s) such that no image represented by the hologram(s) is viewable with the naked eye while the covering layer is present in an opaque state over the hologram(s), PA1 (b) the covering layer is at least partially removable by scratching, rubbing or pulling off by hand to allow any image represented by the hologram(s) to be viewed with the naked eye or the covering layer can be treated to render it non-opaque thereby allowing any image represented by the hologram(s) to be viewed with the naked eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.