Duane E. Mateychuk has been granted 3 US patents while listed as an inventor at Delphi Technologies. The first was granted in 2006 and the most recent in August 2011. Duane E. Mateychuk ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Duane E. Mateychuk in Westfield, IN, US.