Carl Johann Eugen de Haën (December 26, 1835 – November 16, 1911), often known as Eugen de Haën or Eugen de Haen, was a German chemist and entrepreneur. He was founder of the chemistry factory E. de Haën & Co.
Eugen de Haën (* 26. Dezember 1835 in Duisburg; † 16. November 1911 in Hannover; vollständiger Name Carl Johann Eugen de Haën) war ein deutscher Chemiker und Unternehmer. (de)
Carl Johann Eugen de Haën (December 26, 1835 – November 16, 1911), often known as Eugen de Haën or Eugen de Haen, was a German chemist and entrepreneur. He was founder of the chemistry factory E. de Haën & Co. (en)