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USPTO Patent Rankings Data through Dec 31, 2025
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Dirk Kempfert — 17 Patents

Basf Se: 17 patents #864 of 13,826Top 7%
Dielingen, DE: #1 of 2 inventorsTop 50%
Overall (All Time): #263,971 of 4,157,543Top 7%
17 Patents All Time
Dirk Kempfert has been granted 17 US patents while listed as an inventor at Basf Se. The first was granted in 2013 and the most recent in August 2025. Dirk Kempfert ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Dirk Kempfert in Dielingen, DE.

Patents per Year

Patents granted per year, 2013 to 2025Bar chart with a peak of 4 patents in 2022.peak 42013: 1 patents20132015: 1 patents20152016: 1 patents20162019: 1 patents20192020: 1 patents20202021: 3 patents20212022: 4 patents20222023: 2 patents20232024: 2 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
12391791 Thermoplastic polyurethane useful for pneumatic hoses Elmar Poeselt, Dieter Nitschke, Birte Lahrmann 2025-08-19
12060450 Thermoplastic polyurethane Nabarun Roy, Elmar Poeselt, Fin Lammers 2024-08-13
11999816 Thermoplastic polyurethane from recycled raw materials Frank Prissok, Elmar Poeselt, Lionel Gehringer, Juergen Weiser, Matthias Goldbeck 2024-06-04
11851523 Aging-resistant TPU Oliver Steffen Henze, Oliver Muehren 2023-12-26
11725075 Thermoplastic polyurethane Julia Christa Jaehnigen, Nabarun Roy, Elmar Poeselt, Dejan Petrovic, Peter Gutmann 2023-08-15
11535697 Thermoplastic polyurethane Julia Christa Jaehnigen, Nabarun Roy, Elmar Poeselt, Dejan Petrovic, Peter Gutmann 2022-12-27
11377552 Hard-phase-modified thermoplastic polyurethane Nabarun Roy, Oliver Muehren, Alfons Bertels, Sebastian Hartwig 2022-07-05
11306177 Thermoplastic polyurethane Nabarun Roy, Fin Lammers, Elmar Poeselt 2022-04-19
11267928 Method for producing a diblock copolymer Frank Prissok, Elmar Poeselt, Florian Puch, Martina Schoemer 2022-03-08
11168175 TPU pneumatic tubes made with mono ethyleneglycol as chain extender for high temperature use Elmar Poeselt 2021-11-09
11155709 Method for producing thermoplastic polyurethanes Oliver Steffen Henze 2021-10-26
11142625 Process for production of expanded thermoplastic elastomer Peter Gutmann, Christian Däschlein, Jürgen Ahlers, Elke Marten, Torben Kaminsky 2021-10-12
10692624 Conductive thermoplastic polyurethane Frank Schaefer, Ernst Minder, Christoph Bahr, Cornelia Hinrichs, Anja Oltmanns 2020-06-23
10329374 Method for producing a thermoplastic copolymers from polycaprolactam and thermoplastic polyurethane Philippe Desbois, Rajan Hollmann, Bernd Bruchmann, Frank Thielbeer, Rolf Muelhaupt 2019-06-25
9416213 Process for producing polycarbodiimide Markus Bubolz, Karl Haeberle, Kai Henke, Markus Kraemer, Sven Lawrenz +3 more 2016-08-16
8993690 Soft thermoplastic polyurethane based on the ester of a tricarboxylic acid Bin-Eric Chen, Frank Schaefer, Christoph Bahr, Guenter Scholz, Teruya Ohkuwa +5 more 2015-03-31
8455608 Catalyzed pellet heat treatment for thermoplastic polyurethanes Torben Kaminsky 2013-06-04

Frequent Collaborators

Elmar Poeselt8 shared
Nabarun Roy5 shared
Peter Gutmann3 shared
Frank Schaefer3 shared
Dejan Petrovic2 shared
Oliver Steffen Henze2 shared

Nearby-Ranked Inventors

Michael John Caelwaerts17
Umut Zalluhoglu17
Austino Longo17
Till Bredbeck17
Mircea Grigore17
Achim Klein17
Manesh Nadupparambil Sekharan17
Yoshiaki Nishikawa17
Evan Sparks17