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Siheung, South Korea

Daejoo Electronic Materials Co., Ltd.

USPTO Granted Patents = 15

% Expired Patents = 33.3

EPO Patents = 6

Forward Citations = 4

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47 inventors (with patents filed for the assignee):

Seung Min Oh (5 out of 35 patents)

Jong Chan Lim (4 out of 4 patents)

Chi Ho Yoon (2 out of 2 patents)

4. Jin Ho Kwak (2 out of 2 patents)

5. Won Jun Jo (2 out of 2 patents)

6. Young Ho Lee (2 out of 2 patents)

7. Moo Hyun Lim (2 out of 2 patents)

8. Seung-Min Oh (2 out of 16 patents)

9. Jeong Gyu Park (2 out of 2 patents)

10. Jong-hoon Byun (2 out of 2 patents)

11. Yoon-gu Hwang (2 out of 2 patents)

12. Young Min Jeon (2 out of 2 patents)

13. Ki Jun Kim (1 out of 521 patents)

14. Ju Yeon Won (1 out of 7 patents)

15. Kwang-Wook Choi (1 out of 5 patents)

15 patents: Sort by Forward Citations

1. 12463198 - Negative electrode active material for non-aqueous electrolyte secondary battery and manufacturing method thereof (2025-11-04),

2. 12431491 - Silicon oxide composite for lithium secondary battery anode material and method for manufacturing same (2025-09-30),

3. 12412888 - Negative electrode active material for non-aqueous electrolyte secondary battery comprising silicon oxide composite and manufacturing method thereof (2025-09-09),

4. 11851370 - Laminated body for preparing wavelength conversion member and preparation method of wavelength conversion member (2023-12-26),

5. 11713274 - Mixed silver powder and conductive paste comprising same (2023-08-01),

6. 11426795 - Silver particles and manufacturing method therefor (2022-08-30),

7. 11401200 - Mixed silver powder and conductive paste comprising same (2022-08-02),

8. 10593933 - Negative electrode active material for non-aqueous electrolyte rechargeable battery, method for preparing same, and non-aqueous rechargeable battery including same (2020-03-17),

9. 9577255 - Negative electrode active material for non-aqueous electrolyte rechargeable battery, method of fabricating the same, and non-aqueous electrolyte rechargeable battery including the same (2017-02-21),

10. 9403713 - Glass composition for high-reliability ceramic phosphor plate and ceramic phosphor (2016-08-02),

11. 9024304 - Naphthalene derivative, organic material including the same, and organic electroluminescent device including the same (2015-05-05),

12. 8303928 - Fluorine-containing magnesium oxide powder prepared by vapor phase reaction and method of preparing the same (2012-11-06),

13. 8119030 - Thulium-containing fluorescent substance for white light emitting diode and manufacturing method thereof (2012-02-21),

14. 7972586 - Fluorine-containing magnesium oxide powder prepared by vapor phase reaction and method of preparing the same (2011-07-05),

15. 7615248 - Method for preparing blue-emitting barium magnesium aluminate (BAM) phosphor for blacklight unit lamp, and blue-emitting BAM phosphor prepared by the method (2009-11-10),

Company Overview

Daejoo Electronic Materials Co., Ltd. is a South Korean company specializing in the development and manufacturing of advanced electronic materials. The organization focuses on producing high-quality materials for various applications, including semiconductors and displays. With a commitment to innovation, Daejoo invests in research and development to enhance its product offerings and maintain competitiveness in the rapidly evolving electronics industry. The company's expertise positions it as a key player in the global market for electronic materials.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#5 in Siheung

#782 in South Korea

#39,959 in the World

Siheung, South Korea

Daejoo Electronic Materials Co., Ltd.

Forward Citations = 4

47 inventors:

Seung Min Oh (5 out of 35 patents)

Jong Chan Lim (4 out of 4 patents)

Chi Ho Yoon (2 out of 2 patents)

4. Jin Ho Kwak (2 out of 2 patents)

5. Won Jun Jo (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Daejoo Electronic Materials Co., Ltd.. Retrieved from https://idiyas.com/company/daejoo-electronic-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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