 It was this influence that led to his taking his Ph.D. (in 1966) at the School of Pharmacy at Madison, where his major professor was Takeru Higuchi, informally though widely known as 'the father of physical pharmacy'.After joining the UW School of Pharmacy faculty as an assistant professor in 1966, Robinson’s early research was in physical organic chemistry, but he soon shifted his attention to issues of biopharmaceutics, pharmacokinetics, and the general field of drug delivery.He was promoted to full professor in 1973.