William E. Coppens has been granted 4 US patents while listed as an inventor at Siebel Systems. The first was granted in 2006 and the most recent in March 2012. William E. Coppens ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list William E. Coppens in San Leandro, CA, US.