Ivan Gubelmann (1886-1968) was an organic chemist specializing in dyestuffs. He was born in Meilen, Switzerland, on July 7, 1886, and came to the United States in 1912. He worked first for Monsanto (1912-1916) and then became chief chemist for The Newport Company, which manufactured dyestuffs under license from German manufacturers. Gubelmann was promoted to chemical director (1919-1924) and vice president. In 1930, The Newport Company spun off its dyestuffs and chemical division to the Newport Chemical Corporation, with Gubelmann as vice president in charge of manufacture and technical director. On August 14, 1931, the Newport Chemical Corporation sold all its assets to E.I. du Pont de Nemours & Company, where they became part of the Organic Chemicals Department. Gubelmann was transferred to Wilmington in 1932 and retired in 1950 as manager of the Dyestuffs Division. He died in Wilmington in June 1968.