发明名称 THERMOCHROMIC COLORING PAD
摘要 A children's coloring pad may incorporate thermochromic pigments that are specially formulated to develop color and clear color by respective applications of cold and hot temperatures. The pad may be used in a similar manner as with respect to finger painting, but without the residual mess.
申请公布号 WO2014117099(A2) 申请公布日期 2014.07.31
申请号 WO2014US13223 申请日期 2014.01.27
申请人 CHROMATIC TECHNOLOGIES INC. 发明人 CLAYTON, TERRILL, SCOTT;OWEN, TIMOTHY, J.
分类号 B41M5/30 主分类号 B41M5/30
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