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For the Inventor, By the Inventor

Zurich, Switzerland

Hitachi Energy Ltd


USPTO Granted Patents = 338



Trademarks = 16

Forward Citations = 14

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711 inventors (with patents filed for the assignee):

goldMedal Lars Knoll (12 out of 20 patents)

silverMedal Thomas Gradinger (10 out of 34 patents)

bronzeMedal Neethu George (9 out of 15 patents)

4.  Dominik Truessel (9 out of 16 patents)

5.  Milad Maleki (9 out of 12 patents)

6.  Od Naidu (9 out of 12 patents)

7.  Michele Luvisotto (8 out of 19 patents)

8.  Jan Czyzewski (8 out of 19 patents)

9.  Jean-Philippe Hasler (7 out of 30 patents)

10.  Gianpaolo Romano (7 out of 7 patents)

11.  Lluis Santolaria (7 out of 7 patents)

12.  Yvonne-Anne Pignolet (6 out of 16 patents)

13.  Fabian Mohn (6 out of 19 patents)

14.  Slavo Kicin (6 out of 15 patents)

15.  Marco Bellini (6 out of 13 patents)


Core Competencies:
Power Semiconductor Module
Fault Location
Energy Storage System
Surge Arrester
Electric Power System
Transformer Design
Monitoring Arrangement
Decision Logic
Converter Arrangement
Electrical Switching Device
Bushing Manufacturing
Gas Monitoring System

338 patents:

1. 12757452 - Semiconductor device and manufacturing method (2026-10-06),
2. 12756177 - DC fault management in electrical power system (2026-10-06),
3. 12754255 - Monitoring a transformer comprising a tap changer (2026-10-06),
4. 12751285 - Method for manufacturing and module of a semiconductor power module with heat dissipation function (2026-09-29),
5. 12751058 - Semiconductor device and manufacturing method (2026-09-29),
6. 12749618 - Tap changer and a transformer arrangement comprising the tap changer (2026-09-29),
7. D1148791 - Display screen or portion thereof with a computer generated graphical user interface showing an alarm list (2026-09-22),
8. D1148778 - Display screen or portion thereof with a computer generated graphical user interface showing an alarm list (2026-09-22),
9. 12738719 - Gas insulated electric apparatus (2026-09-15),
10. 12738415 - HV apparatus and a method of manufacturing such apparatus (2026-09-15),
11. D1147298 - Air multiplier (2026-09-08),
12. 12733493 - Power semiconductor device and manufacturing method (2026-09-08),
13. 12733225 - Gate-commuted thyristor cell with a base region having a varying thickness (2026-09-08),
14. 12731579 - Command generation system and method of issuing commands (2026-09-08),
15. 12730158 - Method for detecting a ground fault, a control unit and an energy storage system (2026-09-08),
Company Overview
Hitachi Energy Ltd, headquartered in Zurich, Switzerland, specializes in power semiconductor technology, focusing on innovative solutions for electric power systems. The company develops and manufactures advanced power semiconductor modules, energy storage systems, and surge arresters, enhancing the reliability and efficiency of electrical infrastructure. With expertise in transformer design and fault location technologies, Hitachi Energy is committed to supporting the transition to sustainable energy systems through cutting-edge monitoring arrangements and decision logic applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

338 Patents

#4 in Zurich

#53 in Switzerland

#2,682 in the World

Zurich, CH
Zurich, Switzerland

Hitachi Energy Ltd

Forward Citations = 14

711 inventors:

goldMedal Lars Knoll (12 out of 20 patents)

silverMedal Thomas Gradinger (10 out of 34 patents)

bronzeMedal Neethu George (9 out of 15 patents)

4.  Dominik Truessel (9 out of 16 patents)

5.  Milad Maleki (9 out of 12 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Energy Ltd. Retrieved from https://idiyas.com/company/hitachi-energy

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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