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Yongin-si, South Korea

Lt Materials Co., Ltd.

USPTO Granted Patents = 48

EPO Patents = 17

Forward Citations = 5

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52 inventors (with patents filed for the assignee):

Won-Jang Jeong (32 out of 32 patents)

Dae-Hyuk Choi (16 out of 23 patents)

Jin-Seok Choi (15 out of 22 patents)

4. Dong-Jun Kim (15 out of 33 patents)

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

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

7. Jun-Tae Mo (9 out of 9 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. Young-Seok No (5 out of 9 patents)

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

15. Yu-Jin Heo (5 out of 5 patents)

Core Competencies:

Heterocyclic Compound

Organic Light-Emitting Device

Organic Light Emitting Diode

Optoelectronic Element

Display Device

Organic Light Emitting Element

Nitrogen-Containing Polycyclic Compound

Composition for Organic Layer

48 patents: Sort by Forward Citations

1. 12514119 - Heterocyclic compound and organic light-emitting device comprising same (2025-12-30),

2. 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),

3. 12479862 - Heterocyclic compound and organic light-emitting device comprising same (2025-11-25),

4. 12473297 - Heterocyclic compound and organic light emitting diode comprising same (2025-11-18),

5. 12415823 - Heterocyclic compound and organic light-emitting device comprising same (2025-09-16),

6. 12415814 - Heterocyclic compound and organic light emitting device comprising same (2025-09-16),

7. 12410186 - Compound, organic optoelectronic element, and display device (2025-09-09),

8. 12404280 - Heterocyclic compound, and organic light-emitting element using same (2025-09-02),

9. 12404278 - Heterocyclic compound and organic light-emitting device comprising same (2025-09-02),

10. 12338239 - Heterocyclic compound and organic light emitting diode comprising same (2025-06-24),

11. 12258353 - Heterocyclic compound and organic light-emitting element including same (2025-03-25),

12. 12252485 - Heterocyclic compound and organic light emitting device comprising same (2025-03-18),

13. 12185627 - Heterocyclic compound and organic light-emitting device comprising same (2024-12-31),

14. 12171143 - Compound, organic optoelectronic diode, and display device (2024-12-17),

15. 12103934 - Heterocyclic compound, organic light emitting diode comprising same, composition for organic layer of organic light emitting diode, and method for manufacturing organic light emitting diode (2024-10-01),

LT Materials Co., Ltd. is a leading manufacturer and supplier of high-quality materials used in various industries. With a strong focus on research and development, we specialize in creating innovative solutions that meet our customer's diverse requirements. Our extensive product range includes metals, plastics, composites, and more. We are committed to delivering superior quality, exceptional customer service, and ensuring sustainable practices in all our operations. For more information about our products and services, please visit our website.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

48 Patents

#8 in Yongin-si

#318 in South Korea

#14,122 in the World

Yongin-si, South Korea

Lt Materials Co., Ltd.

Forward Citations = 5

52 inventors:

Won-Jang Jeong (32 out of 32 patents)

Dae-Hyuk Choi (16 out of 23 patents)

Jin-Seok Choi (15 out of 22 patents)

4. Dong-Jun Kim (15 out of 33 patents)

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

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