Article for use in forming a permanent image using a temporary marker
US5389426A · kind A · utility
38Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jan 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249995
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A porous material having a top surface and a bottom surface, and a dye applied to the bottom surface of the porous material. The dye is soluble in a volatile imaging liquid contained in a suitable marker, such that when the volatile liquid contacts the top surface of the porous media, the volatile liquid penetrates the porous media, dissolves at least some of the dye to provide a dye solution with at least some of the dye solution migrating to the top surface, and evaporates leaving a permanently visible mark of dye residue on the top surface of the porous material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.