Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ekkehard Bartmann — 52 Patents

Merck: 45 patents #135 of 9,382Top 2%
CICiba-Geigy: 4 patents #661 of 2,867Top 25%
CCCiba Specialty Chemicals: 3 patents #361 of 1,233Top 30%
Sharp Kabushiki Kaisha: 1 patents #6,861 of 10,731Top 65%
Langen (Hessen), DE: #3 of 82 inventorsTop 4%
Overall (All Time): #50,240 of 4,157,543Top 2%
52 Patents All Time
Ekkehard Bartmann has been granted 52 US patents while listed as an inventor at Merck. The first was granted in 1990 and the most recent in December 2009. Ekkehard Bartmann ranks #50,240 of 4,157,543 US inventors in our database (top 1.2%). Patent records list Ekkehard Bartmann in Langen (Hessen), DE.

Patents per Year

Patents granted per year, 1990 to 2009Bar chart with a peak of 8 patents in 1995.peak 81990: 2 patents19901991: 1 patents1992: 3 patents19921993: 5 patents1995: 8 patents19951996: 7 patents1997: 6 patents19971998: 7 patents1999: 2 patents19992000: 2 patents2002: 1 patents20022003: 3 patents2004: 1 patents20042005: 1 patents2007: 1 patents20072008: 1 patents2009: 1 patents2009

Issued Patents All Time

Showing 1–25 of 52 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7629493 Process for the crystallisation of guandinium salts Michael Kirschbaum, Dieter Bensinger, Alexander Haas, Ricky Lippert 2009-12-08 $88,079,000
7445818 Matrix liquid crystal display Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble +3 more 2008-11-04 $175,801,000
7186447 Matrix liquid crystal display Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble +3 more 2007-03-06 $56,478,000
6905740 Matrix liquid crystal display Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble +3 more 2005-06-14 $159,633,000
6706921 Method for producing sulfonyl-benzoyl guanidinium salts Michael Kirschbaum 2004-03-16 $152,426,000
6573404 Method for producing ortho-alkylated benzoic acid derivatives Ingeborg Stein 2003-06-03 $120,306,000
6562419 Matrix liquid crystal display Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble +3 more 2003-05-13 $118,212,000
6515143 Method for producing ortho-alkylated benzoic acid derivatives Ingeborg Stein 2003-02-04 $48,207,000
6350904 Method for producing ortho-alkylated benzoic acid derivatives Ingeborg Stein 2002-02-26 $151,838,000
6159393 Benzene derivatives and liquid-crystalline medium Kazuaki Tarumi, Volker Reiffenrath, Sabine Schoen, Detlef Pauluth, Brigitte Schuler +1 more 2000-12-12 $257,143,000
6156815 Acid-curable binder systems containing 1,2-disulfones Jorg Ohngemach 2000-12-05 $3,498,000
6004479 Matrix liquid crystal display Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble +3 more 1999-12-21 $143,637,000
5985950 Acid-curable binder systems containing 1,2 disulfones Jorg Ohngemach 1999-11-16
5837162 Liquid-crystalline compounds Volker Reiffenrath, Herbert Plach, Detlef Pauluth, Reinhard Hittich, Eike Poetsch +2 more 1998-11-17 $202,996,000
5753142 Nematic liquid-crystal composition for active matrix application Herbert Plach, Eike Poetsch, Syuichi Kozaki, Kazuyoshi Fujioka, Masako Nakamura +2 more 1998-05-19 $131,585,000
5744060 Liquid-crystalline medium Kazuaki Tarumi, Brigitte Schuler, Detlef Pauluth 1998-04-28 $138,283,000
5730904 Partially fluroinated benzene derivatives, and liquid-crystalline medium Sabine Schoen, Kazuaki Tarumi 1998-03-24 $120,803,000
5723682 Difluorovinyl ethers Eike Poetsch, Werner Binder, Michael Kompter, Joachim Krause, Kazuaki Tarumi 1998-03-03 $124,388,000
5717003 Acid-curable binder systems containing 1,2-disulfones Jorg Ohngemach 1998-02-10
5705095 Partially fluorinated benzene derivatives Ulrich Finkenzeller 1998-01-06 $106,277,000
5679285 Vinylene compounds and liquid-crystalline medium Sabine Schoen, Kazuaki Tarumi 1997-10-21 $89,959,000
5643495 1,2,2,2-tetrafluoroethyl ethers, and liquid-crystalline medium Ulrich Finkenzeller 1997-07-01 $593,955,000
5641429 Fluorobenzene derivatives and liquid-crystalline medium Volker Reiffenrath, Hans-Adolf Kurmeier, Eike Poetsch, Herbert Plach, Ulrich Finkenzeller +2 more 1997-06-24 $154,633,000
5637672 Polyimides for STN displays Bernhard Rieger, Eike Poetsch 1997-06-10 $116,710,000
5635107 Fluorine-containing five-membered ring compounds, and a liquid-crystaline medium containing them Georg Weber 1997-06-03 $520,248,000