 Frankenthal was occupied by the French in 1794, who closed the porcelain factory down in 1799.Production had been lower since at least 1790, and models and moulds had been moved to Nymphenburg, which the elector also owned by then, having also become Prince-Elector of Bavaria.The Frankenthal factory was in operation for only 44 years (run for 7 years by the Hannongs, and for 37 by the electoral administration) and is thus the shortest-lived of the major German porcelain manufacturers.