angeOriginal AssigneeL'orealExport CitationBiBTeX, EndNote, RefManPatent Citations (2), Non-Patent Citations (2), Referenced by (13), Classifications (29), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetThermally irreversible photochromic coloring agent, selected in particular from compounds belonging to the diarylethene family and/or the fulgide family as coloring agent in a c