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For the Inventor, By the Inventor

Kaohsiung, Taiwan

Cheng-Tsung Liu

This inventor holds 13 USPTO granted patents and 7 published patent applications. Top assignees: Nidec Corporation, Nidec Motor Corporation. Active years: 2020-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Cheng-Tsung Liu. Retrieved from https://idiyas.com/inventor/cheng-tsung-liu

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

USPTO Granted Patents = 13 

% Patents Active = 76.9

Average Co-Inventor Count = 6.1

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal11 out of 1,523 
 
Nidec Corporation
 patents
silverMedal1 out of 321 
 
Nidec Motor Corporation
 patents
where one patent can have more than one assignee

Years Active: 2020-2026

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13 patents (USPTO):Explore Patents
1. 12665479 - Synchronous reluctance motor (2026-06-23),
2. 12587049 - Synchronous reluctance motor with magnetic flux barriers (2026-03-24),
3. 12573894 - Hybrid permanent magnet motor rotor, hybrid permanent magnet motor, and vehicle (2026-03-10),
4. 12451829 - Variable frequency drive synchronous reluctance motor system with volts-per-Hertz control (2025-10-21),
5. 12445001 - Rotor, motor, and electric product (2025-10-14),
6. 12132353 - Rotor, synchronous reluctance motor, and rotor forming method (2024-10-29),
7. 12051944 - Rotor, motor, and drive device (2024-07-30),
8. 11881746 - Rotor and motor having rotor (2024-01-23),
9. 11770036 - Synchronous reluctance motor and electrical product (2023-09-26),
10. 11469648 - Motor, power unit, and bulldozer (2022-10-11),
11. 11418098 - Rotor, motor, and driving apparatus (2022-08-16),
12. 11018534 - Rotor, motor including rotor, and power unit including motor (2021-05-25),
13. 10855125 - Rotor, motor and electrical device including the motor (2020-12-01),

Title: Innovations of Cheng-Tsung Liu

Introduction

Cheng-Tsung Liu is a prominent inventor based in Kaohsiung, Taiwan. He has made significant contributions to the field of motor systems, holding a total of 13 patents. His work focuses on enhancing the efficiency and functionality of variable frequency drive systems.

Latest Patents

One of his latest patents is a variable frequency drive synchronous reluctance motor system with volts-per-Hertz control. This innovative system allows a single variable frequency drive controller to manage multiple synchronous reluctance motors in an open-loop mode. The design includes a rotor with three or more curved, spaced-apart barrier slots, which enhances the motor's performance. The controller effectively manages speed and torque by adjusting the voltage magnitude of an inverter's output to meet the required load torque. Another notable patent involves a motor that features a rotor with flux barriers, designed to optimize the motor's efficiency based on the number of poles and phases.

Career Highlights

Cheng-Tsung Liu has worked with notable companies such as Nidec Corporation and Nidec Motor Corporation. His experience in these organizations has allowed him to develop and refine his innovative motor technologies.

Collaborations

He has collaborated with talented individuals in the field, including Sheng-Chan Yen and Yu-Wei Hsu. Their combined expertise has contributed to the advancement of motor system technologies.

Conclusion

Cheng-Tsung Liu's contributions to motor technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative designs continue to influence the development of efficient motor systems.

Profile summary based on public USPTO records.
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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