Coloring paper
US7182667B2 · kind B2 · utility
3Cited by
26References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B11/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A coloring sheet, coloring book, coloring roll, and coloring desk and roll assembly having a coloring sheet with a printed coloring image outline on one surface is substantially visually imperceptible under normal viewing conditions, such as when viewed at a non-coloring distance using a standard incandescent light source, and a method of coloring the sheet. The image may be printed with ink extender, ultraviolet, or infrared ink, or printed opposite the coloring surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.