Dudley Eirich has been granted 3 US patents while listed as an inventor at Cognis. The first was granted in 2004 and the most recent in March 2018. Dudley Eirich ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Dudley Eirich in Carlsbad, CA, US.