Friedhelm Balkenhohl has been granted 12 US patents while listed as an inventor at Basf Se. The first was granted in 1993 and the most recent in May 2001. Friedhelm Balkenhohl ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Friedhelm Balkenhohl in Schifferstadt, DE.