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Yongin, South Korea

Lt Materials Co., Ltd.

USPTO Granted Patents = 50

EPO Patents = 17

Forward Citations = 7

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56 inventors (with patents filed for the assignee):

Won-Jang Jeong (32 out of 32 patents)

Dae-Hyuk Choi (16 out of 23 patents)

Dong-Jun Kim (16 out of 34 patents)

4. Jin-Seok Choi (15 out of 22 patents)

5. Joo-Dong Lee (13 out of 21 patents)

6. Jun-Tae Mo (10 out of 10 patents)

7. Yun-Ji Lee (9 out of 10 patents)

8. Hyun-Ju La (8 out of 9 patents)

9. Nam-Jin Lee (7 out of 7 patents)

10. Hye-Su Ji (6 out of 6 patents)

11. Han-Kook Oh (6 out of 7 patents)

12. Gi-Back Lee (5 out of 5 patents)

13. Yong-Geun Jung (5 out of 5 patents)

14. Young-Seok No (5 out of 9 patents)

15. Geon-Yu Park (5 out of 7 patents)

Core Competencies:

Heterocyclic Compound

Organic Light Emitting Diode

Optoelectronic Element

Display Device

Organic Material Layer

Manufacturing Method

Polycyclic Compound

Organic Light Emitting Device

50 patents: Sort by Forward Citations

1. 12527218 - Organic compound, organic light emitting diode and organic light emitting device including the organic compound (2026-01-13),

2. 12522617 - Polycyclic compound and organic light emitting device comprising same (2026-01-13),

3. 12514119 - Heterocyclic compound and organic light-emitting device comprising same (2025-12-30),

4. 12514118 - Heterocyclic compound, organic light emitting device comprising the same, method for manufacturing the same and composition for organic material layer of organic light emitting device (2025-12-30),

5. 12479862 - Heterocyclic compound and organic light-emitting device comprising same (2025-11-25),

6. 12473297 - Heterocyclic compound and organic light emitting diode comprising same (2025-11-18),

7. 12415823 - Heterocyclic compound and organic light-emitting device comprising same (2025-09-16),

8. 12415814 - Heterocyclic compound and organic light emitting device comprising same (2025-09-16),

9. 12410186 - Compound, organic optoelectronic element, and display device (2025-09-09),

10. 12404280 - Heterocyclic compound, and organic light-emitting element using same (2025-09-02),

11. 12404278 - Heterocyclic compound and organic light-emitting device comprising same (2025-09-02),

12. 12338239 - Heterocyclic compound and organic light emitting diode comprising same (2025-06-24),

13. 12258353 - Heterocyclic compound and organic light-emitting element including same (2025-03-25),

14. 12252485 - Heterocyclic compound and organic light emitting device comprising same (2025-03-18),

15. 12185627 - Heterocyclic compound and organic light-emitting device comprising same (2024-12-31),

Company Overview

Lt Materials Co., Ltd. is a prominent player in the field of organic light emitting devices, specializing in the development and manufacturing of advanced organic materials. The company focuses on innovative technologies related to heterocyclic and polycyclic compounds, which are essential for the production of optoelectronic elements and display devices. Based in Yongin, South Korea, Lt Materials is dedicated to enhancing the performance and efficiency of organic light emitting diodes through cutting-edge research and manufacturing methods.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

50 Patents

#10 in Yongin

#320 in South Korea

#14,013 in the World

Yongin, South Korea

Lt Materials Co., Ltd.

Forward Citations = 7

56 inventors:

Won-Jang Jeong (32 out of 32 patents)

Dae-Hyuk Choi (16 out of 23 patents)

Dong-Jun Kim (16 out of 34 patents)

4. Jin-Seok Choi (15 out of 22 patents)

5. Joo-Dong Lee (13 out of 21 patents)

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