page_title: Julius Kahn (inventor)
section_title: Family
hierarchical_section_title: Julius Kahn (inventor) / Family
caption_attribution_description: English: Julius Kahn family 1921
context_page_description: Julius Kahn was an engineer, industrialist, and manufacturer. He was the inventor of the Kahn System, a reinforced concrete engineering technique for building construction. The Kahn System that he patented in 1903 was used worldwide for housing, factories, office and industrial buildings. His system was used in 134 US cities by 1939. His engineering system for building construction was also found then in Africa, Europe, Canada, China, Brazil, and Mexico. In Yokohama, Japan, his system was used in an automobile factory. His unique engineering system of construction was used also in airplane plants, warehouses, docks, foundries, creameries, filtration plants, rubber factories, steel plants, silos, distilleries, smelters, and textile mills.
context_section_description: Kahn married Margaret K. Kohut, daughter of rabbi Alexander Kohut, on December 23, 1903. Margaret was born in Hungary in 1876. Kahn had three children: Gisela (1906–2000), Katherine Kay (1909–1954), and Julius Kahn Jr. (1912–2009). The children were all born in Detroit, Michigan. Julius Jr. studied medicine at Ohio State University.
caption: The Kahn family, 1921
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