abstract:Eugène Jules Houdry (Domont, April 18, 1892 - Upper Darby, Pennsylvania, July 18, 1962) was a French, later naturalised American, mechanical engineer (graduated from École Nationale Supérieure des Arts et Métiers in 1911) who invented catalytic cracking of petroleum feed stocks.Scientific American Inventions and Discoveries Page 336 Rodney P.