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USPTO Patent Rankings Data through Dec 31, 2025
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Barbara Sitek — 2 Patents

UNUnknown: 5 patents #3,065 of 83,584Top 4%
Witten, DE: #106 of 328 inventorsTop 35%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Barbara Sitek has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 2013 and the most recent in October 2019. Barbara Sitek ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Barbara Sitek in Witten, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10429391 Biomarkers for cholangiocellular carcinoma (CCC) Helmut E. Meyer, Dominik Megger, Thilo Bracht, Juliet Padden, Hideo Baba +2 more 2019-10-01
8535896 Biomarkers for inflammation of the liver Wolff Schmiegel, Bence Sipos, Christian Mölleken, Günter Klöppel, Helmut E. Meyer +1 more 2013-09-17