From 1946 he studied arts at the Kunstakademie DÃ 1\/4 sseldorf and the UniversitÃ t der KÃ 1\/4 nste in West Berlin . For many years he studied sculpture and graphics , first at the Kunstakademie DÃ 1\/4 sseldorf , then at the UniversitÃ t der KÃ 1\/4 nste Berlin .