Thermochromic game piece
US6307664A · kind A · utility
Inventors
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermochromic game or prize or message indicator includes a typical thermochromic or thermally sensitive battery testers coupled to a first conductive substrate with a second thermally responsive game piece or prize or message indicator of the present invention combines a typical thermochromic or thermally sensitive battery tester coupled to the conductive substrate with an extension of the conductive substrate. The thermochromic game or prize of message indicator can be used to display a verbal message or icon for conveying whether a prize has been won. Additionally, the thermochromic game or prize or message indicator can be used to display any desired verbal message or icon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.