Jochen Erdmann has been granted 2 US patents while listed as an inventor at Siemens Aktiengesellschaft. The first was granted in 1997 and the most recent in August 2004. Jochen Erdmann ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Jochen Erdmann in Oberasbach, DE.