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For the Inventor, By the Inventor

Hamburg, Germany

Repower Systems Ag


USPTO Granted Patents = 55

% Expired Patents = 32.7



Forward Citations = 506

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41 inventors (with patents filed for the assignee):

goldMedal Jens Fortmann (12 out of 19 patents)

silverMedal Heinz-Hermann Letas (12 out of 25 patents)

bronzeMedal Jens Altemark (10 out of 14 patents)

4.  Martin Von Mutius (6 out of 12 patents)

5.  Dirk Steudel (5 out of 5 patents)

6.  Matthias Schubert (4 out of 10 patents)

7.  Roland Weitkamp (4 out of 11 patents)

8.  Jörg Zeumer (4 out of 4 patents)

9.  Urs Bendel (3 out of 16 patents)

10.  Peter Quell (3 out of 8 patents)

11.  Carsten Eusterbarkey (2 out of 9 patents)

12.  Karsten Warfen (2 out of 14 patents)

13.  Marc Seidel (2 out of 10 patents)

14.  Uwe Hinz (2 out of 3 patents)

15.  Marc Petsche (2 out of 3 patents)


Core Competencies:
Wind Power Plant
Rotor Blade
Wind Energy Installation
Converter Control
Monitoring Systems
Blade Adjustment
Voltage Regulation
Network Faults
Calibration Method
Energy Supply
Oscillation Damping
Power Control

55 patents:

1. 9181925 - Method of servicing wind power plant using azimuth angle (2015-11-10),
2. 8961143 - Rotor blade of a wind power plant and method for fabricating a rotor blade of a wind power plant (2015-02-24),
3. 8888463 - Rotor blade and method for producing same (2014-11-18),
4. 8727731 - Method for establishing a blade connection of a rotor blade, a blade connection and a securing element for a blade connection (2014-05-20),
5. 8433541 - Method and system for monitoring a wind energy installation (2013-04-30),
6. 8410624 - Wind energy installation with variable rotation speed characteristic (2013-04-02),
7. 8405237 - Energy supply for a blade adjustment device pertaining to a wind energy installation (2013-03-26),
8. 8402176 - Systems and methods for automatic configuration parameter monitoring between actual and nominal parameter sets for wind energy installations (2013-03-19),
9. 8400003 - Wind energy installation having a double-energized asynchronous generator and converter control (2013-03-19),
10. 8397075 - Method and apparatus for access control to installation control systems of wind energy installations (2013-03-12),
11. 8390140 - Wind energy installation with a heating device (2013-03-05),
12. 8390139 - Wind energy installation having converter control (2013-03-05),
13. 8390138 - Wind energy installation with negative sequence system regulation and operating method (2013-03-05),
14. 8378515 - Wind turbines having control for network faults and operating method thereof (2013-02-19),
15. 8378514 - Phase-angle offsettng converter to minimize damaging effects of sudden phase changes due to network disturbance (2013-02-19),
Repower Systems AG, headquartered in Hamburg, Germany, specializes in the development and manufacturing of advanced wind energy technology. The company focuses on various aspects of wind power generation, including the design and production of wind power plants, rotor blades, and sophisticated monitoring systems. Their expertise extends to converter control, blade adjustment, and voltage regulation, ensuring efficient energy production and reliability in the face of network faults. Repower is committed to driving innovation in the renewable energy sector.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Repower Systems Ag
55 Patents

#22 in Hamburg

#969 in Germany

#12,903 in the World

Hamburg, DE
Hamburg, Germany

Repower Systems Ag

Forward Citations = 506

41 inventors:

goldMedal Jens Fortmann (12 out of 19 patents)

silverMedal Heinz-Hermann Letas (12 out of 25 patents)

bronzeMedal Jens Altemark (10 out of 14 patents)

4.  Martin Von Mutius (6 out of 12 patents)

5.  Dirk Steudel (5 out of 5 patents)

Please report any incorrect information to [email protected]
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