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For the Inventor, By the Inventor

Zürich, Switzerland

Hitachi Energy Ltd


USPTO Granted Patents = 238



Trademarks = 23

Forward Citations = 3

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507 inventors (with patents filed for the assignee):

goldMedal Thomas Gradinger (8 out of 32 patents)

silverMedal Michele Luvisotto (7 out of 18 patents)

bronzeMedal Lars Knoll (7 out of 15 patents)

4.  Neethu George (6 out of 12 patents)

5.  Dominik Truessel (6 out of 12 patents)

6.  Jan Czyzewski (6 out of 17 patents)

7.  Georgi Manev (6 out of 7 patents)

8.  Angel Mihaylov (6 out of 6 patents)

9.  Zhibo Pang (5 out of 20 patents)

10.  Peter Sjöberg (5 out of 19 patents)

11.  Milad Maleki (5 out of 7 patents)

12.  Yong Wang (5 out of 7 patents)

13.  Tobias Wikstroem (5 out of 8 patents)

14.  Uwe Drofenik (5 out of 16 patents)

15.  Jens Tepper (5 out of 27 patents)


Core Competencies:
Transformer Technology
Power Transmission
Microgrid Control
Surge Arrester
Electrical Monitoring
Power Semiconductor Devices
Energy Storage Systems
High Voltage Circuit-Breakers
Fault Detection
Insulated Gate Bipolar Transistor
Adaptive Power Control
Liquid-Insulated Components

238 patents:

1. 12501668 - Power semiconductor device and a method for producing a power semiconductor device (2025-12-16),
2. 12501666 - Power semiconductor device with an insulated trench gate electrode (2025-12-16),
3. 12500420 - Method to operate a system comprising an energy storage system in response to a bypass request based on a total number of modules to be bypassed (2025-12-16),
4. 12500052 - Operating mechanism for circuit breakers (2025-12-16),
5. 12495565 - Bidirectional thyristor device with asymmetric characteristics (2025-12-09),
6. 12494632 - Chargeless interrupter device for surge arrester (2025-12-09),
7. 12494417 - Power module device with an embedded power semiconductor device (2025-12-09),
8. 12494409 - Power semiconductor component (2025-12-09),
9. 12494303 - Conductor for electric current, method of manufacturing the conductor and use of conductor for conducting electric current with AC component (2025-12-09),
10. 12489039 - Pre-product, method and electronic device (2025-12-02),
11. 12488927 - Reinforced transformer core frame and manufacturing method (2025-12-02),
12. 12487267 - Fault location determination in a power transmission system (2025-12-02),
13. 12483063 - Secure distributed state estimation for networked microgrids (2025-11-25),
14. 12482618 - Electrical switching device (2025-11-25),
15. 12482585 - Surge arrester (2025-11-25),
Hitachi Energy is a global technology leader, driving the transformation of the energy system. With a foundation of 100 years of innovation and technology development, we provide world-class energy solutions for the utility, industry, transportation, and infrastructure sectors. Our mission is to co-create sustainable energy systems that make the world more sustainable and secure for all.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

238 Patents

#1 in Zürich

#65 in Switzerland

#3,493 in the World

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Zürich, Switzerland

Hitachi Energy Ltd

Forward Citations = 3

507 inventors:

goldMedal Thomas Gradinger (8 out of 32 patents)

silverMedal Michele Luvisotto (7 out of 18 patents)

bronzeMedal Lars Knoll (7 out of 15 patents)

4.  Neethu George (6 out of 12 patents)

5.  Dominik Truessel (6 out of 12 patents)

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