1915-

Canadian-born American physicist and inventor whose pioneering research on the electron microscope led to the development of the first commercially available electron microscope in North America. Hillier, who holds more than 40 patents, is credited with the invention of the electron lens correction device and the electron microprobe microanalyser as well as being the first to picture bacterial viruses, an achievement that led to the use of the electron microscope as a practical research tool.