Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Birgit Derfuss — 2 Patents

BABayer Materialscience Ag: 1 patents #483 of 1,035Top 50%
CACovestro Deutschland Ag: 1 patents #436 of 964Top 50%
Mülheim an der Ruhr, DE: #212 of 596 inventorsTop 40%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Birgit Derfuss has been granted 2 US patents while listed as an inventor at Bayer Materialscience Ag. The first was granted in 2016 and the most recent in February 2017. Birgit Derfuss ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Birgit Derfuss in Mülheim an der Ruhr, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9561613 Apparatus and process for producing products from pigment-containing polymer mixtures Michael Bierdel, Carsten Conzen 2017-02-07
9376561 Abs compositions with improved surface after heat-moisture storage Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers, Hans-Jürgen Thiem, Sven Hobeika +1 more 2016-06-28