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John Gorrie
John Gorrie (1802–1855) was an American physician and inventor in Apalachicola, Florida, who built the first mechanical ice-making machine in the United States and patented it in 1851.
John Grant Aunins
John Grant Aunins is an American biochemical engineer elected to the National Academy of Engineering in 2021, known for vaccine process development at Merck and microbiome therapeutics at Seres.
John Gustafson (computer scientist)
John L. Gustafson is an American computer scientist known for Gustafson's law of parallel speedup, winning the inaugural Gordon Bell Prize in 1988, and inventing the posit number format.
John H. Bruning
John H. Bruning is an American optical engineer who led Corning Tropel as president and CEO and was elected to the National Academy of Engineering in 1998.
John H. Chesters
John H. Chesters, full name John Hugh Chesters, was a British metallurgist whose research on heat-resistant furnace linings improved steelmaking furnaces; he was elected a Royal Society Fellow in 1969.
John H. Dessauer
John H. Dessauer (1905–1993) was a German-born American chemical engineer who, as research director of Haloid and later Xerox, brought Chester Carlson's xerography into the office.
John H. Gibbons
John H. Gibbons was an American nuclear physicist who directed the congressional Office of Technology Assessment from 1979 to 1993 and served as President Clinton's science adviser.
John H. Koon
John H. Koon is an American environmental engineer elected to the National Academy of Engineering in 2019 for designing systems to treat complex industrial wastewaters.
John H. Linehan
John H. Linehan is an American biomedical engineer, a Northwestern University professor and National Academy of Engineering member known for pulmonary mechanics research and medical device regulation.
John H. McElroy
John H. McElroy (1936–2007) was an American electrical engineer who led NASA Goddard's CO2 laser communications research, directed NOAA's satellite programs, and was elected to the National Academy of Engineering in 1998.
John H. Perepezko
John H. Perepezko is an American physical metallurgist and IBM Bascom Professor at the University of Wisconsin–Madison, elected to the National Academy of Engineering in 2004 for solidification processing innovations.
John H. Schmertmann
John H. Schmertmann, born 1928, is an American geotechnical engineer and University of Florida professor emeritus, best known for the Schmertmann settlement method for footings on sand.
John H. Sununu
John H. Sununu is an American Republican politician and mechanical engineer who served as governor of New Hampshire and as White House chief of staff under George H. W. Bush.
John Hancock Center
The John Hancock Center, now officially 875 North Michigan Avenue, is a 100-story, 344-meter mixed-use skyscraper on Michigan Avenue in Chicago, completed in 1969 and known for its exterior X-bracing.
John Hancock Tower
The John Hancock Tower, officially 200 Clarendon Street, is a 790-foot mirrored-glass skyscraper in Boston designed by Henry N. Cobb, opened in 1976 as New England's tallest building.
John Happel
John Happel was a chemical engineer at Columbia University known for Low Reynolds number hydrodynamics, written with Howard Brenner, and for isotope tracing methods in catalysis.
John Harrison
John Harrison (1693–1776) was a Yorkshire carpenter turned self-taught clockmaker whose marine timekeepers H1 through H4 solved the longitude problem, earning him over £23,000 from Parliament.
John Hays Hammond Jr.
John Hays Hammond Jr. (1888–1965) was an American inventor in Gloucester, Massachusetts, called the Father of Radio Control; he held 437 US patents and developed jam-resistant radio control of ships.
John Henry Holland
John Henry Holland (1929–2015) was an American scientist and University of Michigan professor who invented genetic algorithms, pioneered complex adaptive systems, and helped found the Santa Fe Institute.
John Herbert Hollomon, Jr.
J. Herbert Hollomon (1919–1985) was an American metallurgist who led materials research at General Electric, became the first Assistant Secretary of Commerce for Science and Technology, and served as president of the University of Oklahoma.
John Hopcroft
John Hopcroft, full name John Edward Hopcroft, is an American computer scientist at Cornell University who shared the 1986 Turing Award for achievements in algorithms and data structures.
John Houbolt
John Houbolt (1919–2014) was an American aerospace engineer at NASA's Langley Research Center who championed lunar orbit rendezvous, the mission mode adopted for the Apollo Moon landings in 1962.
John Howard Dellinger
John Howard Dellinger (1886–1962) was an American telecommunication engineer who led the National Bureau of Standards radio laboratory and discovered the sudden ionospheric disturbance, the Dellinger effect.
John J. Cassidy
John J. ("Jack") Cassidy (1930–2022) was an American hydraulic engineer elected to the National Academy of Engineering in 1994, known for dams and hydroelectric projects worldwide.
John J. Croat
John J. Croat is an American metallurgist who co-discovered Nd-Fe-B permanent magnets at General Motors in 1982, independently of Masato Sagawa, winning the 2023 Honda Prize.
John J. Dorning
John J. Dorning is an American nuclear engineer and Professor Emeritus at the University of Virginia, elected to the National Academy of Engineering in 2007.
John J. Gilman
John J. Gilman (1925–2009) was an American materials scientist nicknamed "Mr. Dislocations" for his work on the mechanical properties of solids, especially dislocations in crystals and ceramics.
John J. Hopfield
John J. Hopfield, born in Chicago in 1933, is an American physicist at Princeton known for the 1982 Hopfield neural network and the 2024 Nobel Prize in Physics.
John J. Loud
John Jacob Loud was an American lawyer and tanner in Weymouth, Massachusetts, who received the first patent for a ballpoint pen in 1888, though it was never commercialized.
John J. McKetta
John J. McKetta (1915–2019) was an American chemical engineer, dean emeritus at the University of Texas at Austin, and energy adviser to five U.S. presidents.