Product presenting different artistic images in the presence and absence of ambient light and fabrication method therefor
US5084309A · kind A · utility
16Cited by
2References
29Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 14, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Mar 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24868
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention includes a product and a fabrication method for generating one image in the presence of ambient light and a second different image in the absence of ambient light. This invention can use phosphorescent material to form one of the images. This invention is particularly related to puzzles or novelty artwork for children.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.