Alan D. DeVilbiss has been granted 21 US patents while listed as an inventor at Celis Semiconductor. The first was granted in 1998 and the most recent in May 2024. Alan D. DeVilbiss ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Alan D. DeVilbiss in Colorado Springs, CO, US.