John Bennett Fenn:
John Bennett Fenn is an American chemist and Nobel laureate.
Birth:
June 15, 1917 Delaware, USA
Claim to Fame:
Fenn is an American chemist who shares half the 2002 Nobel Prize in Chemistry with Koichi Tanaka for their development of a mass spectrometry technique to analyze biological macromolecules. He developed the electrospray ionization technique to ionize macromolecules without fracturing the molecule.