A highlightable mixture, such as an ink, including a colored pigment, an eradicable colorant, and a non-eradicable colorant; a kit including the highlightable mixture and an eradicator fluid; an colorant complex including a colorless or substantially colorless eradicable dye selected from the group consisting...http://www.google.fr/patents/US7704308?utm_source=gb-gplus-shareBrevet US7704308 - Method of highlighting with a reversible highlighting mixture, highlighting kit, and highlighted complex
Method of highlighting with a reversible highlighting mixture, highlighting ...
