William H. Sperber has been granted 9 US patents while listed as an inventor at Cargill, Incorporated. The first was granted in 2003 and the most recent in May 2011. William H. Sperber ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list William H. Sperber in Minnetonka, MN, US.