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For the Inventor, By the Inventor

Pyeongtaek, South Korea

Dongwoo Fine-Chem

USPTO Granted Patents = 28

% Expired Patents = 3.6


Forward Citations = 2

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91 inventors (with patents filed for the assignee):

goldMedal Won Hee Lee (5 out of 5 patents)

silverMedal Jung-Min Oh (4 out of 36 patents)

bronzeMedal Sang-tae Kim (3 out of 31 patents)

4.  Kyong-ho Lee (3 out of 5 patents)

5.  Hyo-San Lee (3 out of 30 patents)

6.  Myung-Jin Kim (3 out of 4 patents)

7.  Young Ju Kim (3 out of 45 patents)

8.  Bong-Jin Choi (3 out of 3 patents)

9.  Ji-Hoon Lee (3 out of 3 patents)

10.  Dae Kyu Kim (3 out of 3 patents)

11.  Han Sub Ryu (2 out of 35 patents)

12.  Yoon Ho Huh (2 out of 38 patents)

13.  Yong-Sun Ko (2 out of 49 patents)

14.  Hee Jun Park (2 out of 16 patents)

15.  Ji-Hoon Jeong (2 out of 11 patents)


Core Competencies:
Lithium Hydroxide
Cathode Active Material
Transparent Display
Nanoparticle Measurement
Antenna Structure
Photoresist Composition
LED Lighting
Polyimide Film
Etchant Composition
Conductive Mesh
Flow Cell
Thinner Compositions

28 patents:

1. 12757318 - Circuit board (2026-10-06),
2. 12756098 - Antenna device and display device including the same (2026-10-06),
3. 12747162 - Method for producing lithium hydroxide (2026-09-29),
4. 12741445 - Metal thin film substrate, transparent display comprising same, method for patterning metal thin film substrate, and method for manufacturing transparent display (2026-09-22),
5. 12736459 - Particle measurement device (2026-09-15),
6. 12736453 - Method and apparatus for estimating nanoparticles in a solution (2026-09-15),
7. 12703826 - Etchant composition, a pattern formation method and a manufacturing method of array substrate using the etchant composition (2026-08-11),
8. 12683207 - Methods for preparing cathode active material precursor material and cathode active material for lithium secondary battery, and cathode active material for lithium secondary battery prepared according to same (2026-07-14),
9. 12676349 - Methods for manufacturing positive electrode active material precursor material and positive electrode active material for secondary lithium battery, and positive electrode active material for secondary lithium battery manufactured thereby (2026-07-07),
10. 12660402 - LED lighting device and method for manufacturing the same (2026-06-16),
11. 12651847 - Antenna structure and image display device including the same (2026-06-09),
12. 12651836 - Antenna structure (2026-06-09),
13. 12651822 - Antenna stack structure and display device including the same (2026-06-09),
14. 12650744 - Sensor device and image display device including the same (2026-06-09),
15. 12630764 - Etchant composition for etching silicon and silicon germanium, and preparation method of pattern using the same (2026-05-19),
Company Overview
Dongwoo Fine-Chem is a prominent player in the chemical industry, specializing in the development and manufacturing of high-performance materials. The company focuses on producing advanced chemical products, including specialty chemicals and electronic materials, which are essential for various applications in industries such as electronics, automotive, and pharmaceuticals. Headquartered in Pyeongtaek, South Korea, Dongwoo Fine-Chem is committed to innovation and sustainability, leveraging cutting-edge technology to meet the evolving needs of its global clientele.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

28 Patents

#6 in Pyeongtaek

#490 in South Korea

#23,299 in the World

Pyeongtaek, KR
Pyeongtaek, South Korea

Dongwoo Fine-Chem

Forward Citations = 2

91 inventors:

goldMedal Won Hee Lee (5 out of 5 patents)

silverMedal Jung-Min Oh (4 out of 36 patents)

bronzeMedal Sang-tae Kim (3 out of 31 patents)

4.  Kyong-ho Lee (3 out of 5 patents)

5.  Hyo-San Lee (3 out of 30 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dongwoo Fine-Chem. Retrieved from https://idiyas.com/company/dongwoo-fine-chem

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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