Jan K. Schiffmann has been granted 35 US patents while listed as an inventor at Delphi Technologies. The first was granted in 1999 and the most recent in March 2025. Jan K. Schiffmann ranks #96,288 of 4,157,543 US inventors in our database (top 2.3%). Patent records list Jan K. Schiffmann in Newbury Park, CA, US.