An improved absorbent product, such as a disposable diaper type garment having a wetness indicator disposed between a translucent cover member and an absorbent member. The improvement relates to providing a flexible pH-change/color-change wetness indicator coating on a surface portion of the product...http://www.google.de/patents/US4231370?utm_source=gb-gplus-sharePatent US4231370 - Disposable diaper type garment having wetness indicator
