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For the Inventor, By the Inventor

Berlin, Germany

Wankel Gmbh


USPTO Granted Patents = 62

Forward Citations = 356

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27 inventors (with patents filed for the assignee):

goldMedal Dankwart Eiermann (36 out of 38 patents)

silverMedal Werner Schubert (7 out of 7 patents)

bronzeMedal Wolfgang Sohler (6 out of 7 patents)

4.  Roland Nuber (5 out of 7 patents)

5.  Josef Speiser (4 out of 4 patents)

6.  Hans-Jurgen Klusowski (3 out of 3 patents)

7.  Johannes Steinwart (3 out of 19 patents)

8.  Franz Sutter (2 out of 2 patents)

9.  Manfred Fischer (2 out of 2 patents)

10.  Max Ruf (2 out of 24 patents)

11.  Felix Wankel (2 out of 2 patents)

12.  Gottlieb Wilmers (2 out of 8 patents)

13.  Werner Wieland (2 out of 2 patents)

14.  Otto Kraic (2 out of 5 patents)

15.  Wulf Leitermann (1 out of 14 patents)


Core Competencies:
Rotary Piston Engine
Lubrication System
Cooling System
Sealing Technology
Internal Combustion
Rotary Piston Compressor
Eccentric Bearing
Delivery Valve
Heat Pump
Ignition System
Pressure Valve
Composite Construction

62 patents:

1. 5452996 - Position-independent rotary piston internal combustion engine (1995-09-26),
2. 5199863 - Sealing of an eccentric bearing of a rotary piston internal combustion (1993-04-06),
3. 5100309 - Cooling medium pump of a rotary piston internal combustion engine (1992-03-31),
4. 5067557 - Machine unit consisting of a rotary piston internal combustion engine (1991-11-26),
5. 5049049 - Rotary piston internal combustion engine (1991-09-17),
6. 5039289 - Rotary piston blower having piston lobe portions shaped to avoid (1991-08-13),
7. 5011387 - Rotary piston internal combustion engine (1991-04-30),
8. 5011385 - Bearing- and drive arrangement of a rotary piston internal combustion (1991-04-30),
9. 4971533 - Piston of a rotary piston engine (1990-11-20),
10. 4969809 - Lubrication system for an eccentric bearing of a rotary piston (1990-11-13),
11. 4943217 - Delivery valve of a rotary piston compressor (1990-07-24),
12. 4940400 - Lubrication system for a rotary-piston internal combustion engine (1990-07-10),
13. 4886437 - Bearing arrangement of an external-axial rotary piston blower (1989-12-12),
14. 4867659 - Parallel-and external-axial rotary piston blower operating in meshing (1989-09-19),
15. 4850827 - Cooling system of an eccentric shaft of a rotary piston internal (1989-07-25),
Wankel GmbH, based in Berlin, specializes in the development and manufacturing of rotary piston engines, a unique alternative to traditional internal combustion engines. The company focuses on advanced technologies such as lubrication systems, cooling systems, and sealing technology, enhancing the efficiency and performance of rotary piston engines. Additionally, Wankel GmbH is involved in rotary piston compressors and eccentric bearings, contributing to innovative solutions in automotive engineering and related fields.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

62 Patents

#20 in D-1000 Berlin

#897 in Germany

#11,755 in the World

Berlin, DE
Berlin, Germany

Wankel Gmbh

Forward Citations = 356

27 inventors:

goldMedal Dankwart Eiermann (36 out of 38 patents)

silverMedal Werner Schubert (7 out of 7 patents)

bronzeMedal Wolfgang Sohler (6 out of 7 patents)

4.  Roland Nuber (5 out of 7 patents)

5.  Josef Speiser (4 out of 4 patents)

Please report any incorrect information to [email protected]
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