(May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.
He played a major role in developing leaded gasoline (Tetraethyllead) and some of the first chlorofluorocarbons (CFCs), better known by its brand name Freon; both products were later banned due to concerns about their impact on human health and the environment.
He was granted more than 100 patents over the course of his career.