 York left academia to establish DeYor Laboratories in Boardman, Ohio.In 1993, he sold DeYor Laboratories to Corning Inc. York has made a number of contributions in the medical field, having given a $1.5 million contribution to establish an Endowed Chair in Pathology and an Endowed Chief Residency in Pathology at the University of Arkansas for Medical Sciences.In 1999, he donated a science and math building to Catholic High School for Boys, his alma mater.