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USPTO Patent Rankings Data through Dec 31, 2025
Home › Cities › Krefeld, DE

Krefeld, DE All Time

6,336 patents  ·  1,103 inventors

Ranked #532 of 112,640 cities Top 1%

Krefeld, DE ranks #532 worldwide for total patents filed all time, with 6,336 patents from 1,103 inventors. Leading employers of inventors based in Krefeld, DE include Bayer Healthcare, Covestro Deutschland Ag, Goldschmidt Holding Gmbh.

Showing 1–50 of 1,103 inventors

Rank Inventor Primary Company Patents
1 Hans-Josef Buysch Bayer Healthcare 186
2 Rolf Dhein Bayer Healthcare 131
3 Rolf Wehrmann Bayer Healthcare 106
#4 Karsten-Josef Idel Bayer Healthcare 101
#5 Wolfgang Ebert Bayer Healthcare 97
#6 Pieter Ooms Bayer Healthcare 92
#7 Jörg Hofmann Bayer Healthcare 91
#8 Friedrich-Karl Bruder Covestro Deutschland Ag 89
#9 Ludwig Bottenbruch Bayer Healthcare 83
#10 Heinz Pudleiner Covestro Deutschland Ag 65
#11 Stefan Silber Goldschmidt Holding Gmbh 54
#12 Wilfried Paulus Bayer Healthcare 50
#13 Rudolf Binsack Bayer Healthcare 49
#13 Jurgen Meixner Bayer Healthcare 49
#15 Claus Wulff Bayer Healthcare 48
#16 Knud Reuter Bayer Healthcare 47
#17 Steffen Kuhling Bayer Healthcare 46
#18 Hans-Joachim Traenckner Bayer Healthcare 45
#18 Hans-Georg Heine Bayer Healthcare 45
#20 Reinhard Langer Bayer Healthcare 42
#21 Werner Nouvertne Bayer Healthcare 41
#22 Volker Serini Bayer Healthcare 40
#23 Gerhard Darsow Bayer Healthcare 38
#24 Wolfgang Alewelt Bayer Healthcare 34
#25 Hans-Detlef Heinz Bayer Healthcare 33
#25 Gunter Buxbaum Bayer Healthcare 33
#27 Marc Graaf Hanon Systems 32
#27 Otto Immel Bayer Healthcare 32
#27 Jochen Schoeps Bayer Healthcare 32
#27 Josef Pav Kleinewefers Gmbh 32
#31 Volker Eckhardt Bayer Healthcare 29
#32 Wieland Hovestadt Bayer Healthcare 28
#32 Dieter Margotte Bayer Healthcare 28
#32 Norbert Schon Bayer Healthcare 28
#32 Hans-Rudolf Dicke Bayer Healthcare 28
#36 Andre Neubauer Infineon Technologies Ag 27
#36 Joachim Thomsen Rockwell Automation 27
#36 Werner Nielinger Bayer Healthcare 27
#36 Peter Hohlein Bayer Healthcare 27
#40 Gunter Lailach Bayer Healthcare 26
#40 Heinrich Schrage Bayer Healthcare 26
#40 Michael Prein Bayer Healthcare 26
#43 Peter Wachtler Bayer Healthcare 25
#44 Hermann Perrey Bayer Healthcare 24
#44 Jürgen Heuser Bayer Healthcare 24
#44 Ingo Schwirtlich Bayer Healthcare 24
#44 Rafael Oser Bayer Healthcare 24
#44 Friedrich Fahnler Bayer Healthcare 24
#44 Karl-Heinz Ahrweiler Eduard Kusters Maschinefabrik 24
#44 Bernhard Schulte Bayer Healthcare 24

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