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Iksan, South Korea

Iljin Materials Co., Ltd.

USPTO Granted Patents = 19

EPO Patents = 3

Forward Citations = 10

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14 inventors (with patents filed for the assignee):

Ki Deok Song (18 out of 21 patents)

Sun Hyoung Lee (16 out of 17 patents)

Tae Jin Jo (16 out of 17 patents)

4. Seul-Ki Park (12 out of 13 patents)

5. Seul Ki Park (4 out of 4 patents)

6. Won Jin Beom (3 out of 5 patents)

7. Eun Sil Choi (3 out of 4 patents)

8. Hyung Cheol Kim (3 out of 5 patents)

9. Sun Hyung Lee (2 out of 3 patents)

10. Kideok Song (1 out of 1 patent)

11. Young Ho Ryu (1 out of 1 patent)

12. Jung Woo Seo (1 out of 1 patent)

13. Chang Yol Yang (1 out of 3 patents)

14. Sang Hwa Yoon (1 out of 3 patents)

19 patents: Sort by Forward Citations

1. 11749794 - Electrolytic copper foil for secondary battery and method for producing the same (2023-09-05),

2. 11629422 - Electrolytic copper foil for secondary battery, having enhanced flexural resistance, and method for producing same (2023-04-18),

3. 11622445 - Surface-treated copper foil, manufacturing method thereof, copper foil laminate including the same, and printed wiring board including the same (2023-04-04),

4. 11508967 - Electrolytic copper foil for secondary battery and method for producing the same (2022-11-22),

5. 11380898 - Electrolytic copper foil for secondary battery and method for producing the same (2022-07-05),

6. 11362336 - Electrolytic copper foil and secondary battery using the same (2022-06-14),

7. 11171319 - Electrolytic copper foil for secondary battery and method for producing the same (2021-11-09),

8. 11166378 - Carrier-foil-attached ultra-thin copper foil (2021-11-02),

9. 11164831 - Carrier-foil-attached ultra-thin copper foil (2021-11-02),

10. 11162183 - Electrolytic copper foil for secondary battery, having enhanced physical properties at low temperature, and method for producing same (2021-11-02),

11. 11142838 - Electrolytic copper foil for secondary battery, having enhanced flexural resistance, and method for producing the same (2021-10-12),

12. 11118279 - Electrolytic copper foil for secondary battery and method for producing the same (2021-09-14),

13. 10920330 - Electrolytic copper foil for secondary battery and method for producing the same (2021-02-16),

14. 10826117 - Electrolytic copper foil for graphene and method for producing the copper foil (2020-11-03),

15. 10686191 - Electrodeposited copper foil, and electrical component and battery comprising same (2020-06-16),

Company Overview

Iljin Materials Co., Ltd. is a prominent South Korean company specializing in advanced materials for various industries, including electronics and automotive sectors. The company focuses on the development and manufacturing of high-performance materials such as copper foil, which is essential for electronic components and batteries. With a commitment to innovation, Iljin Materials leverages cutting-edge technology to enhance product performance and sustainability, positioning itself as a key player in the global materials market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

19 Patents

#2 in Iksan

#663 in South Korea

#32,663 in the World

Iksan, South Korea

Iljin Materials Co., Ltd.

Forward Citations = 10

14 inventors:

Ki Deok Song (18 out of 21 patents)

Sun Hyoung Lee (16 out of 17 patents)

Tae Jin Jo (16 out of 17 patents)

4. Seul-Ki Park (12 out of 13 patents)

5. Seul Ki Park (4 out of 4 patents)

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