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USPTO Patent Rankings Data through Dec 31, 2025
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Alexander Kehrmann — 5 Patents

UNUnknown: 2 patents #12,644 of 83,584Top 20%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Alexander Kehrmann has been granted 5 US patents while listed as an inventor at Unknown. The first was granted in 2004 and the most recent in March 2025. Alexander Kehrmann ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Alexander Kehrmann in Münster, DE.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
12246364 Treatment of mill scale containing hydrocarbons Nico W. Scheeres 2025-03-11
11938527 Process for the purification of waste materials or industrial by-products comprising chlorine Jan Hohlmann, Carsten Nass, Gerhard Auer, Christian Adam, Christopher Hamann +1 more 2024-03-26
7097816 Method of producing ferrous sulfate heptahydrate 2006-08-29
7005007 Hydraulic binder 2006-02-28
6740156 Carrier substance for a hydraulic binder 2004-05-25