| 摘要 |
PROBLEM TO BE SOLVED: To provide a soap bearing a hidden message that gradually appears as the soap wears down with use, thereby surprising a user who receives the soap with the appearance of the unexpected message or enabling the user to enjoy guessing the content of the message as he/she uses the soap. SOLUTION: In the soap bearing the hidden message that gradually appears on a surface, the message 2 is created with a soap of another color at the center 1 of the soap and covered with a soap outer layer 3. The soap amuses the user with a visible change that gradually appears as the soap wears down with use. COPYRIGHT: (C)2011,JPO&INPIT
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