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Incheon, South Korea

Dongjin Semichem Co., Ltd.

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USPTO Granted Patents = 107

% Expired Patents = 50.5

EPO Patents = 15

Forward Citations = 644

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302 inventors (with patents filed for the assignee):

Jae-Hyun Kim (23 out of 164 patents)

Deog-Bae Kim (15 out of 15 patents)

Jae-Woo Lee (12 out of 12 patents)

4. Jung-Youl Lee (11 out of 11 patents)

5. Chang-Il Oh (9 out of 9 patents)

6. Chong-Soon Yoo (8 out of 8 patents)

7. Hyun-Jin Kim (7 out of 35 patents)

8. Jeong-sik Kim (6 out of 7 patents)

9. Sang-Jung Kim (6 out of 6 patents)

10. Sang-Dai Lee (6 out of 8 patents)

11. Jae Hyun Kim (5 out of 50 patents)

12. Kyu Soon Shin (5 out of 5 patents)

13. Byung-Uk Kim (5 out of 25 patents)

14. Hyo-Jung Roh (5 out of 5 patents)

15. Jong-Dai Park (5 out of 5 patents)

Core Competencies:

Organic Light Emitting Diode

Display Device

Photoresist Composition

Liquid Crystal Compound

Conductive Composition

Chemical Mechanical Polishing

Anti-Reflective Coating

Polymers

Photosensitive Resin

Electrode

Molecular Electronics

Semiconductor Device

107 patents: Sort by Forward Citations

1. 12744212 - Slurry composition for secondary battery electrode and secondary battery electrode using same (2026-09-22),

2. 12729338 - Electrochromic device and manufacturing method therefor (2026-09-08),

3. 12638886 - Resin composition, display apparatus including the resin composition, and portable electronic device including the resin composition (2026-05-26),

4. 12619144 - Positive photosensitive resin composition (2026-05-05),

5. 12600881 - Composition for forming hard coating layer, hard coating layer using the composition, and laminate comprising the hard coating layer (2026-04-14),

6. 12441684 - Organic compound for capping layer and organic light emitting diode comprising the same (2025-10-14),

7. 12412900 - Conductor pre-dispersion slurry for secondary battery electrode, preparation method therefor, electrode manufactured by applying conductor pre-dispersion slurry, and secondary battery comprising same electrode (2025-09-09),

8. 12404355 - Photopolymerizable composition and cured film and display device using the same (2025-09-02),

9. 12225809 - Coating composition including functionalized graphene oxide, method for forming stacked structure using the same and method for manufacturing display device using the same (2025-02-11),

10. 12216403 - Positive photosensitive resin composition and display device using the same (2025-02-04),

11. 12046464 - Substrate cleaning composition, method for cleaning substrate using the same, and method for fabricating semiconductor device using the same (2024-07-23),

12. 12030859 - Polymerizable compound, polymerizable composition and optical film (2024-07-09),

13. 11787974 - Chemical-mechanical polishing particle and polishing slurry composition comprising same (2023-10-17),

14. 11650502 - Polymer and composition for forming an anti-reflective film and method of manufacturing an integrated circuit device using the anti-reflective film (2023-05-16),

15. 11518908 - Water-repellent coating composition and water-repellent coating substrate coated therewith (2022-12-06),

Company Overview

Dongjin Semichem Co., Ltd., based in Incheon, South Korea, specializes in the development and manufacturing of advanced materials for organic electronics. The company focuses on key technologies such as Organic Light Emitting Diodes (OLEDs), display devices, and various chemical compositions including photoresists and conductive materials. With a strong emphasis on innovation, Dongjin Semichem contributes to the fields of liquid crystal compounds, chemical mechanical polishing, and anti-reflective coatings, positioning itself as a significant player in the organic electronics landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

107 Patents

#6 in Incheon, 402-040

#176 in South Korea

#7,342 in the World

Incheon, South Korea

Dongjin Semichem Co., Ltd.

Forward Citations = 644

302 inventors:

Jae-Hyun Kim (23 out of 164 patents)

Deog-Bae Kim (15 out of 15 patents)

Jae-Woo Lee (12 out of 12 patents)

4. Jung-Youl Lee (11 out of 11 patents)

5. Chang-Il Oh (9 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dongjin Semichem Co., Ltd.. Retrieved from https://idiyas.com/company/dongjin-semichem-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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