Ivan Levinstein dating history

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Ivan Levinstein (1845–1916) was a German-born British chemist who pioneered the manufacture of synthetic dyes and helped develop the British chemical industry in the late nineteenth century. He was born in Charlottenburg, Germany, the son of a Berlin Calico manufacturer, studied chemistry at the Gewerbeinstitut, which later became Technische Universität Berlin, before joining the family business. He obtained his first patent in Germany in 1863 for improvements in manufacturing coal tar dyes.