Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephan Wellach — 2 Patents

SASüd-Chemie Ag: 1 patents #10 of 70Top 15%
SAStatoil Asa: 1 patents #53 of 191Top 30%
Hemsbach, DE: #71 of 172 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Stephan Wellach has been granted 2 US patents while listed as an inventor at Süd-Chemie Ag. All of these patents were granted in 2012. Stephan Wellach ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Stephan Wellach in Hemsbach, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8128809 Ring opening process Knut Vebjørn Grande, Jorunn Steinsland Rosvoll, Per Aksel Skjolsvik, Gotz Burgfels, Josef Schönlinner +2 more 2012-03-06 $8,726,000
8119552 Catalyst composition for hydrocracking and process of mild hydrocracking and ring opening Gotz Burgfels, Josef Schönlinner, Friedrich Schmidt, Volker Kurth, Vebjorn Knut Grande +2 more 2012-02-21