John Spence has been granted 8 US patents while listed as an inventor at Arizona Board Of Regents For And On Behalf Of Arizona State University. The first was granted in 1997 and the most recent in November 2022. John Spence ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list John Spence in Tempe, AZ, US.