James C. Booth, 1831 :Introduced nickel as a metal in U.S. currency.
James Hall, 1832 :Was the first New York State geologist; helped found the American Association for the Advancement of Science.
Eben Horsford, 1838:Devoted his life to the development of "yeast powder," now known as baking powder.
James H. Salisbury, 1846:Was a nutritionist, "Salisbury Steak" was named for him.
Washington Roebling, 1857:Oversaw construction of the Brooklyn Bridge.
Devolson Wood, 1857:Helped organize the American Society for Engineering Education and held its first presidency.
Edward P. Rothwell, 1858: Organized the Institute for Mining Engineers.
Alexander Cassatt, 1859 :Was the first 20th century President of Pennsylvania Railroad. Brother of Mary Cassatt, Impressionist painter.
Edwin Thacher, 1863: Introduced the most widely used slide rule into the U.S.
Henry A. Rowland, 1870: Was known as the "Father of Spectroscopy" for his pioneering work in the study of magnetic properties.
George Knapp, 1876: Was an industrialist, instrumental in founding the Union Carbide Company.
George W. G. Ferris, 1881: Invented, of course, the Ferris wheel.
Emil Praeger, 1915: Oversaw the renovation of the White House in 1949.
Erik Jonsson, 1922: Co-founded Texas Instruments, who marketed the first pocket calculator.
Milton Brumer, 1923: Led the team that built the Verrazano-Narrows Bridge.
Allen B. DuMont, 1924: Known as the "Father of Television" for his development of the cathode ray tube.
Percy Hill, 1945: Designed and patented the REACH toothbrush.
George M. Low, 1948: Managed the Apollo project that put the first men on the moon and later was President of Rensselaer. (Richard Harris played him in Apollo 13)
Marcian Hoff, 1958: Was part of the team at Intel of California that produced the first microprocessor.
William C. W. Mow, 1959: Founded Bugle Boy Industries and Dragon International.
Janet Rutledge, 1983: Patented an innovative hearing device based on digital speech processing