 However, Minton faced financial problems at the beginning of the twentieth century and pâté-sur-pâté became less important to the firm's output.After Solon retired, his son Leon Solon was art director at Minton, but he was associated with tube-lined Art Nouveau designs rather than pâte-sur-pâte.With Solon's death in 1913 and the advent of the First World War, an era had ended for pâte-sur-pâte.