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Dreyfus, Camille Edouard (11 November 1878–27 September 1956), industrial chemist and entrepreneur, was born in Basel, Switzerland, the son of Abraham Dreyfus, a banker, and Henrietta Wahl. Camille and his younger brother, Henri (later Americanized to Henry), both received their education at the University of Basel, being awarded their Ph.D.s in chemistry in 1902 and 1905, respectively. Camille also pursued postgraduate study at the Sorbonne in Paris until 1906. After working several years in Basel to gain industrial experience, Camille and his brother established a chemical laboratory in their home town. Seeking a product that the public would readily buy, they developed a synthetic indigo. Although they made some money in this venture, it quickly became clear that synthetic indigo did not have a sufficient market. Consequently the Dreyfus brothers focused their attention on celluloid, which at that time was produced only in a flammable form. They recognized that a large potential market existed for nonflammable celluloid, if it could be developed. They focused on cellulose acetate and were shortly producing one to two tons per day. Half of their output went to the motion picture industry for film, with the other half going into the production of toilet articles....

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Washburn, Frank Sherman (08 December 1860–09 October 1922), engineer and industrial entrepreneur, was born in Centralia, Illinois, the son of Elmer Washburn, a politician and banker, and Elizabeth Knight. Washburn received a degree in civil engineering from Cornell University in 1883, after which he went to work for the Chicago and North Western Railroad. During 1884 he did graduate study at Cornell in economics, history, and political science and returned to the Chicago and North Western in 1885 as a bridge engineer and later a division engineer....

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Weightman, William (30 September 1813–25 August 1904), manufacturer, chemist, and financier, was born in Waltham, Lincolnshire, England, the son of William Weightman and Anne Farr. Weightman emigrated to the United States when he was sixteen at the suggestion of his uncle John Farr, a chemist and founder of the firm Farr & Kunzi, established in 1818. Farr & Kunzi was the first company to experiment with conchona alkaloids in the United States, at the same time that Pellatier and Gaventou were announcing their discovery of that substance in 1820. Weightman entered the firm in 1820, and when Kunzi retired in 1836, Weightman and another associate, Thomas Powers, formed Farr, Powers & Weightman. In 1841 Weightman married Louise Stelwagon; they had three children....