Ammon E. Gustafson has been granted 26 US patents while listed as an inventor at Digimarc. The first was granted in 2001 and the most recent in March 2012. Ammon E. Gustafson ranks #150,017 of 4,157,543 US inventors in our database (top 3.6%). Patent records list Ammon E. Gustafson in Beaverton, OR, US.