Robert E. Halvachs has been granted 11 US patents while listed as an inventor at Mallinckrodt. The first was granted in 1990 and the most recent in August 2016. Robert E. Halvachs ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Robert E. Halvachs in Belleville, IL, US.