Jean-Claude Chambellan Duplessis served as artistic director of the Vincennes porcelain manufactory and its successor at Sèvres from 1748 to his death in 1774. The manufactory was bought by the King in 1759, although Madame de Pompadour was allowed effective free rein to oversee it. A period of superb quality in both design and production followed, creating much of the enduring reputation of French porcelain. The light-hearted Rococo was given a more serious air, often by restricting it to the painting, rather than the porcelain shape.