- WO2014166494-A1, SKOU E, NOERGAARD C, STAMATIN S N, atent Assignee Name(s) and Code(s): UNIV SYDDANSK (UYSY-Non-standard), Recycling of platinum group metals used as catalyst for e.g. automotive exhaust gas purification, involves dissolving platinum group metal by treating catalytic structure in electrolytic cell, and re-precipitating platinum group metal