Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ralf Schellen — 2 Patents

BHBayer Healthcare: 1 patents #4,623 of 8,007Top 60%
SGSachleben Chemie Gmbh: 1 patents #26 of 55Top 50%
Dormagen, DE: #201 of 463 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Ralf Schellen has been granted 2 US patents while listed as an inventor at Bayer Healthcare. The first was granted in 2012 and the most recent in October 2018. Ralf Schellen ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ralf Schellen in Dormagen, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10105675 Method for phosgenating compounds containing hydroxyl, thiol, amino and/or formamide groups Leslaw Mleczko, Aurel Wolf, Konstantinos METAXAS, Jens Stefan Roggan 2018-10-23
8163828 Additive for polymers and process for preparation thereof Peter Ebbinghaus, Bernhard Becker, Jens Kohnert, Jorg Hocken, Bernd-Michael Klein +3 more 2012-04-24