Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ralf Stich — 3 Patents

TATesto Ag: 2 patents #17 of 74Top 25%
TKTesto Se & Co. Kgaa: 1 patents #15 of 22Top 70%
Kirchzarten, DE: #18 of 71 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Ralf Stich has been granted 3 US patents while listed as an inventor at Testo Ag. The first was granted in 2016 and the most recent in July 2020. Ralf Stich ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Ralf Stich in Kirchzarten, DE.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10705003 Particle measuring device in a gas flow path Rolf Merte 2020-07-07
9518911 Impactor and method for characterizing a carrier gas enriched with suspended particles Michael D. Laufer, Jürgen Bär 2016-12-13
9372170 Gas sensor Peter Ziegler, Luciana Pitta-Bauermann 2016-06-21