The Gilomen brothers originally registered four brands: Thuya, Midland, Delma and Gil. Thuya served as the company’s name, and the other brands were used for watch models. The Delma brand name first appeared on watches in 1933. It was established as the company’s name in 1966 with the company take over by Ulrich Wüthrich and Fritz Fankhauser. In 1996 Ulrich Wüthrich's son-in-law, Fred Leibundgut, entered the company and took over as President and CEO. 