Narcís Monturiol i Estarriol (Catalan pronunciation: [nəɾˈsiz muntuɾiˈɔl i əstəriˈɔl]; September 28, 1819 – September 6, 1885) was a Spanish lawyer, artist, journalist, newspaper publisher, and engineer born in Figueres, Catalonia. He created the first submarine that did not need air to operate and was powered by an engine.
Victor Ochoa was born on August 2, 1948. He is an activist, painter, graphic designer, and master muralist. He has created more than 100 murals, many of which are located in San Diego, California.
Lonnie George Johnson was born on October 6, 1949. He is an American inventor, aerospace engineer, and entrepreneur. He is best known for inventing the bestselling Super Soaker water gun in 1989.
Philip Emeagwali was born on August 23, 1954. He is a Nigerian computer scientist. He has made claims about inventing the Internet and creating the world’s fastest computer, the Connection Machine.
• James Marion West Sr. (1871–1941), Texas businessman and politician • James Marion West Jr. (1903–1957), Texas businessman • James West (inventor) (born in 1931), American engineer, co-inventor of the electret microphone
Otis Frank Boykin (August 29, 1920 – March 26, 1982) was an American inventor and engineer. His inventions include electrical resistors used in computers, missile guidance systems, and pacemakers.
Daniel Hale Williams was born on January 18, 1856, and died on August 4, 1931. He was an American surgeon and the founder of a hospital. In 1891, he started Provident Hospital, which was the first hospital in the United States that did not separate patients based on race.
Lloyd Augustus Hall was born on June 20, 1894, and died on January 2, 1971. He was an American chemist who helped improve how food is kept safe and fresh. During his career, Hall received 59 United States patents for his inventions.
Percy Lavon Julian (April 11, 1899 – April 19, 1975) was an American research chemist who made important contributions to the development of medicines from plants. He was the first person to create the natural substance physostigmine. Julian also helped develop large-scale methods to produce the human hormones progesterone and testosterone from plant sterols, such as stigmasterol and sitosterol.
Charles Richard Drew was born on June 3, 1904, and died on April 1, 1950. He was an American surgeon and scientist who studied blood transfusions. He created better methods for storing blood and helped establish large blood banks before World War II began.