David Pall
Born in Thunder Bay, Ontario of Russian immigrant parents, he grew up on a farm in Saskatchewan, and attended McGill University, from which he was granted a bachelor's degree in chemistry and a Ph.D. in physical chemistry. He moved to New York in 1938 and became a part of the Manhattan Project.  In 1946, he established Pall Corporation.  The company's initial focus was on the development of filters for use in aircraft hydraulics.