Robert W. Stackman has been granted 14 US patents while listed as an inventor at Celanese Gmbh. The first was granted in 1980 and the most recent in August 1993. Robert W. Stackman ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Robert W. Stackman in Morristown, NJ, US.