Patrick Eugene Haggerty was an American engineer and businessman. He was a co-founder and former president and chairman of Texas Instruments, Incorporated (TI). Under his leadership, the company grew from a small Texas oil exploration company into a global leader in the semiconductor industry. During his tenure, TI invested in transistors when their commercial value was still much in question, created the first silicon transistor, the first commercial transistor radio, the first integrated circuit, and helped develop and produce the first single chip microprocessor.