Wenderoth, Lind, & Ponack, L.L.P.
Functional material containing volatile agent
 A functional material which fades in color with the volatilization of volatile agents such as fragrant agents, deodorant agents, antibacterial agents, etc. so that a user can visually check the end of the effect of such agents. A volatile agent and an oil-soluble dye having a dissolving proportion of 0.0001-1% are carried on a porous carrier undyeable with, i.e. low in affinity for the oil-soluble dye. The content of the oil-soluble dye is 0.1-100 .mu.g per square centimeter of the effective surface area of the porous carrier. 
Rengo Co., Ltd.
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Y10T Y10T Y10T A61L Y10T Y10T
additional additional additional inventional additional additional
Yoshinori Masao Koichi Isao
Nakano Fujita Taniguchi Tomoyasu