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USPTO Patent Rankings Data through Dec 31, 2025
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Knut Ehrhardt — 2 Patents

DADegussa Ag: 1 patents #925 of 2,007Top 50%
DADegussa-Huels Ag: 1 patents #156 of 473Top 35%
Hanau, DE: #315 of 722 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Knut Ehrhardt has been granted 2 US patents while listed as an inventor at Degussa Ag. The first was granted in 2000 and the most recent in April 2001. Knut Ehrhardt ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Knut Ehrhardt in Hanau, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6221294 Process for the production of cyanuric chloride moldings Ralf Goedecke, Klaus Hentschel, Rolf Moller, Manfred Schmidt, Michael Kissner 2001-04-24
6136242 Process for the production of cyanuric chloride moldings Ralf Goedecke, Rolf Moller, Juan Alberto Juarez Garcia 2000-10-24