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For the Inventor, By the Inventor

Gyeongju, South Korea

Iljin Co., Ltd.


USPTO Granted Patents = 26

% Expired Patents = 3.8


Forward Citations = 43

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52 inventors (with patents filed for the assignee):

goldMedal Se Woong Jeong (7 out of 7 patents)

silverMedal Byung Hwan Kim (7 out of 7 patents)

bronzeMedal Tae Ho Hong (7 out of 8 patents)

4.  Tae Sung Kwon (6 out of 7 patents)

5.  Min Kook Park (6 out of 6 patents)

6.  Soon Chan Kwon (6 out of 6 patents)

7.  Hyun Woo Kim (5 out of 5 patents)

8.  Ig Jin Kwon (4 out of 4 patents)

9.  Jun Mo Kang (4 out of 10 patents)

10.  Byung Joon Choi (4 out of 10 patents)

11.  Hyuk Sang Kwon (3 out of 27 patents)

12.  Sung Keun Lee (3 out of 3 patents)

13.  Byong Suk Yu (3 out of 3 patents)

14.  Young In Yoon (3 out of 3 patents)

15.  Dae Ju Lee (3 out of 3 patents)


Core Competencies:
Ball Joint
Hybrid Suspension Arm
Top Mount Assembly
Strut Bearing
Vehicle Height Adjusting Device
Rotation Induction Device
Suspension System
Polymer Composite Insulator
Single-Axis Damping Joint
Manufacturing Method
Stabilizer Link
Module Bracket Device

26 patents:

1. 12502815 - Top mount assembly and method for manufacturing same (2025-12-23),
2. 12257874 - Ball joint assembly for vehicle, stabilizer link including same, and method for manufacturing ball joint assembly for vehicle (2025-03-25),
3. 12247611 - Ball joint and manufacturing method therefor (2025-03-11),
4. 12188515 - Ball joint, suspension arm comprising same, and manufacturing method thereof (2025-01-07),
5. 12097742 - Vehicle suspension arm (2024-09-24),
6. 12011961 - Top mount assembly and method for manufacturing same (2024-06-18),
7. 11685213 - Top mount assembly and method for manufacturing same (2023-06-27),
8. 11639736 - Strut bearing assembly for vehicle (2023-05-02),
9. 11629754 - Rotation induction device for vehicle (2023-04-18),
10. 11629753 - Rotation induction device for vehicle (2023-04-18),
11. 11597247 - Rotation induction device for vehicle (2023-03-07),
12. 11584180 - Strut bearing assembly for vehicle and manufacturing method thereof (2023-02-21),
13. 11577568 - Rotation induction device for vehicle (2023-02-14),
14. 11491837 - Suspension arm and ball joint (2022-11-08),
15. 11345203 - Ball joint and hybrid suspension arm including same (2022-05-31),
Company Overview
Iljin Co., Ltd. is a South Korean company headquartered in Gyeongju, specializing in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions in sectors such as automotive, electronics, and energy, leveraging cutting-edge technology to enhance product performance and sustainability. With a commitment to research and development, Iljin aims to contribute to the advancement of technology and meet the evolving needs of its global clientele.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

26 Patents

#3 in Gyeongju

#510 in South Korea

#24,781 in the World

Gyeongju, KR
Gyeongju, South Korea

Iljin Co., Ltd.

Forward Citations = 43

52 inventors:

goldMedal Se Woong Jeong (7 out of 7 patents)

silverMedal Byung Hwan Kim (7 out of 7 patents)

bronzeMedal Tae Ho Hong (7 out of 8 patents)

4.  Tae Sung Kwon (6 out of 7 patents)

5.  Min Kook Park (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Iljin Co., Ltd.. Retrieved from https://idiyas.com/company/iljin-company

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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