1804 Apr 13. His father ceded his share in the company to his sons. JPT Chatel ran the factory and JJ Chatel the commercial side of the business, at first, it seems through his partnership with Louis Francois Delamare, in the wholesale traders, Delamare & Chatel fils aine. Eg in 1803 they had shipped 20 bottles of eau forte and 6 of huile de vitriol to Dollfus, Mieg et Cie in Mulhouse which became the subject of a legal dispute. Delamare et Chatel fils aine had been dissolved by August 1807.