专利名称：Water-metachromatic laminate, and process
for its production
发明人：Akio Nakashima,Hisayoshi Kato申请号：US10819229申请日：20040407公开号：US06984418B2公开日：20060110
专利附图：
摘要：On a support, a porous resin layer which is opaque in a water-unabsorbed stateand capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area orareas in a co-existent state, to make up a water-metachromatic laminate. A novel toyelement can be provided in which latent images standing invisible in a normal conditionare rendered visible by means of water as a medium so as to be visually distinguished.
申请人：Akio Nakashima,Hisayoshi Kato
地址：Aichi-ken JP,Aichi-ken JP
国籍：JP,JP
代理机构：Fitzpatrick, Cella, Harper & Scinto
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