Color changing print
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 1, 1993
Issued Date -
N/A
app pub date -
Sep 3, 1991
filing date -
Jun 6, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the color changing print of this invention, plural areas are printed by using plural types of color changing inks which develop into different colors from the substantially invisible colorless state by reaction with a color changing agent. By the emergence of print from colorlessness and by giving changes in the appearing colors, unexpectedness and entertainingness are provided so that an attractive education may be realized.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully