CHICAGO – Businessman Robert Pritzker, who led a global industrial conglomerate and whose family founded the Hyatt chain of hotels, has died. He was 85.

Pritzker died Thursday evening in a Chicago nursing facility after suffering from Parkinson’s disease, his executive assistant Becky Spooner said Friday.

Pritzker founded and was chairman and president of the Marmon Group, an international conglomerate of manufacturing and service companies. His business acumen helped Marmon Group revenues grow into the billions of dollars.