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Seoul, South Korea

Hyosung Corporation

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USPTO Granted Patents = 84

% Expired Patents = 19.0

CIPO Patents = 10

EPO Patents = 30

Trademarks = 13

Forward Citations = 440

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185 inventors (with patents filed for the assignee):

Ik-Hyeon Kwon (8 out of 8 patents)

Ik-Hyun Kwon (8 out of 8 patents)

Soo-Myung Choi (8 out of 8 patents)

4. Jae-Shik Choi (8 out of 8 patents)

5. Tae-Jung Lee (7 out of 7 patents)

6. Young-Gyo Choi (6 out of 6 patents)

7. Eun-lai Cho (6 out of 6 patents)

8. Young-Soo Wang (5 out of 5 patents)

9. Sung-Ryong Kim (5 out of 5 patents)

10. Seok-Jong Han (5 out of 5 patents)

11. Byung Hwan Jeong (4 out of 7 patents)

12. June-Sung Kim (4 out of 10 patents)

13. Song-joo Choi (4 out of 4 patents)

14. Byeng Joo Byen (4 out of 6 patents)

15. Jong Yun Choi (3 out of 5 patents)

Core Competencies:

HVDC Technology

Power Control

Textile Materials

Polyester Fiber

Cellulose Fiber

Overcurrent Prediction

Transformer Diagnostics

Composite Charging

84 patents: Sort by Forward Citations

1. 12734928 - Multi-channel charging system (2026-09-15),

2. 12278568 - Power facility for remote control (2025-04-14),

3. 12224615 - Composite charging system and method (2025-02-11),

4. 12143024 - Sensorless prediction method of overcurrent in isolated bidirectional DC-DC converter (2024-11-12),

5. 10442167 - Ballistic cloth using a unidirectional-oriented aramid sheet and polyethylene film and method for manufacturing the same (2019-10-15),

6. 10174197 - Spandex fiber having improved adhesive characteristics with hot melt adhesive and method for manufacturing same (2019-01-08),

7. 10038336 - Power duplication apparatus for HVDC system and control method therefor (2018-07-31),

8. 10038311 - Module replacement device of high voltage direct current transmission system (2018-07-31),

9. 10017883 - Polyester tire cord with excellent dimensional stability and method for manufacturing the same (2018-07-10),

10. 9938642 - Preparation method for multifunctional polyester fibre (2018-04-10),

11. 9917522 - Power control apparatus for sub-module of MMC converter (2018-03-13),

12. 9819187 - Device for supplying power to HVDC converter (2017-11-14),

13. 9726708 - Device for detecting partial discharge for power transformer (2017-08-08),

14. 9712042 - Bypass apparatus for converter (2017-07-18),

15. 9658273 - Method of detecting partial discharging location of power device (2017-05-23),

Company Overview

Hyosung Corporation, headquartered in Seoul, South Korea, specializes in power control systems and advanced materials. The company is recognized for its innovations in HVDC technology, which enhances the efficiency of power transmission. Additionally, Hyosung develops textile materials, including polyester and cellulose fibers, contributing to various industries. Its expertise extends to overcurrent prediction and transformer diagnostics, ensuring reliable and sustainable energy solutions. The firm is committed to advancing technology in the power sector and materials science.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

84 Patents

#86 in Seoul

#214 in South Korea

#9,073 in the World

Seoul, South Korea

Hyosung Corporation

Forward Citations = 440

185 inventors:

Ik-Hyeon Kwon (8 out of 8 patents)

Ik-Hyun Kwon (8 out of 8 patents)

Soo-Myung Choi (8 out of 8 patents)

4. Jae-Shik Choi (8 out of 8 patents)

5. Tae-Jung Lee (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hyosung Corporation. Retrieved from https://idiyas.com/company/hyosung

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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