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Seoul, South Korea

Lg Industrial Systems Co., Ltd.

USPTO Granted Patents = 150

EPO Patents = 6

Trademarks = 1

Forward Citations = 1,753

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138 inventors (with patents filed for the assignee):

Yi Sug Kwon (8 out of 8 patents)

Kil Hee Cho (6 out of 6 patents)

Jong Goo Kim (4 out of 4 patents)

4. Gwang Nam Lee (3 out of 3 patents)

5. Hee Il Ahn (3 out of 3 patents)

6. Seok Won Lee (3 out of 3 patents)

7. Young Gi Lee (3 out of 3 patents)

8. Han Byul Kim (3 out of 3 patents)

9. Ho Seong Kim (3 out of 3 patents)

10. Wan Je Cho (2 out of 4 patents)

11. Ho Soung Kim (2 out of 3 patents)

12. Dae-Woon Lim (2 out of 2 patents)

13. Seung-Ho Na (2 out of 2 patents)

14. Seok Jung Yoon (2 out of 2 patents)

15. Ki Soo Yang (2 out of 2 patents)

Core Competencies:

Resistive Superconducting Fault Current Limiter

Ground Fault Detection

Power Module

Hybrid DC Electromagnetic Contactor

Circuit Breaker

Pulse Width Modulation Control

Inverter Technology

Sensorless Vector Control

Vacuum Circuit Breaker

Elevator Systems

Vehicle Measuring Apparatus

Communication Devices

150 patents: Sort by Forward Citations

1. 7345858 - Resistive superconducting fault current limiter (2008-03-18),

2. 7233465 - Ground fault detection system and method for inverter (2007-06-19),

3. 7227279 - Phase deficiency display device for thermal magnetic type molded case circuit breaker (2007-06-05),

4. D527349 - Power module for programmable logic controller (2006-08-29),

5. 7079363 - Hybrid DC electromagnetic contactor (2006-07-18),

6. 7068037 - Method of diagnosing inverter trouble (2006-06-27),

7. 7053324 - Switching mechanism for a manual motor starter (2006-05-30),

8. D520992 - Central processing unit module for programmable logic controller (2006-05-16),

9. 7025177 - Elevator system without machine (2006-04-11),

10. 7002088 - Handle apparatus for a manual motor (2006-02-21),

11. D511502 - Breaker for electric railroad line (2005-11-15),

12. 6965438 - Vehicle measuring apparatus and method for toll collection system (2005-11-15),

13. D506185 - Circuit breaker for protecting motor (2005-06-14),

14. 6900614 - Rotation speed search apparatus for increasing an output voltage of an inverter and method thereof (2005-05-31),

15. 6897789 - System for determining kind of vehicle and method therefor (2005-05-24),

LG Industrial Systems Co., Ltd. is a leading global company specializing in electrical and electronic products. We provide a wide range of innovative solutions for various industries including power generation, transmission and distribution, industrial automation, and renewable energy. With our advanced technologies and high-quality products, we continuously strive to meet the evolving needs of our customers and contribute to the advancement of society.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

150 Patents

#50 in Seoul

#144 in South Korea

#5,310 in the World

Seoul, South Korea

Lg Industrial Systems Co., Ltd.

Forward Citations = 1,753

138 inventors:

Yi Sug Kwon (8 out of 8 patents)

Kil Hee Cho (6 out of 6 patents)

Jong Goo Kim (4 out of 4 patents)

4. Gwang Nam Lee (3 out of 3 patents)

5. Hee Il Ahn (3 out of 3 patents)

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