Chester Carlson's FrustrationsChester Carlson had been frustrated with the slow mimeograph machine and the cost of photography and that lead him to inventing a new way of copying. He invented an electrostatic process that reproduced words on a page in just minutes.
Selling the Xerox PhotocopierCarlson had a hard time finding investors in his new invention. He was turned down by IBM and the U.S. Army Signal Corps, it took him eight years to find an investor, which was the Haloid Company later to become the Xerox Corporation.
Patenting and Trademarking XeroxChester Carlson was both a research engineer and a patent attorney. He filed a patent application in April, 1939, stating, "I knew I had a very big tiger by the tail." The Xerox Corporation trademarked the name "Xerox" and has protected the name carefully.