FS

Friedhelm Steffens

CA Covestro Deutschland Ag: 5 patents #2 of 181Top 2%
📍 Leverkusen, DE: #1 of 122 inventorsTop 1%
Overall (2018): #29,662 of 503,207Top 6%
5
Patents 2018

Issued Patents 2018

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10143987 Method for dividing fluid streams Berthold Keggenhoff, Jeffrey Bolton, Marc Seekamp, Gerhard Ruffert, Jürgen Kern +1 more 2018-12-04
10131641 Method for producing TDI-trimerisates with high purity Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes +3 more 2018-11-20
10011484 Process for purifying raw-material gases by fractionation Alfred Soppe, Juergen Bittner, Thorsten Leidig, Knud Werner, Thomas Runowski 2018-07-03
9938147 Process for purifying raw-material gases by fractionation Alfred Soppe, Juergen Bittner, Thorsten Leidig, Knud Werner, Thomas Runowski 2018-04-10
9932299 Process for separating an isocyanate prepared by phosgenation of a primary amine in the gas phase from the gaseous crude product of the phosgenation Bastian Mahr 2018-04-03