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Seoul, South Korea

Hanwha Chemical Corporation

USPTO Granted Patents = 97

% Expired Patents = 13.4

CIPO Patents = 3

EPO Patents = 56

Forward Citations = 202

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256 inventors (with patents filed for the assignee):

Dong Ok Kim (14 out of 14 patents)

Jin Seo Lee (13 out of 20 patents)

Joo Hee Han (9 out of 13 patents)

4. Wan Jae Myeong (8 out of 15 patents)

5. Ui Gab Joung (8 out of 9 patents)

6. Gui Ryong Ahn (8 out of 9 patents)

7. Seung Hoe Do (8 out of 10 patents)

8. Ju Young Park (8 out of 35 patents)

9. Dong Wook Jeong (7 out of 7 patents)

10. Eung Gyu Kim (7 out of 8 patents)

11. Seong Cheol Hong (7 out of 7 patents)

12. In Jun Lee (6 out of 6 patents)

13. Eun Byul Kwon (6 out of 6 patents)

14. Sang Hyun Cho (5 out of 10 patents)

15. Seung-Hoe Do (5 out of 5 patents)

Core Competencies:

Polyamide Production

Hybrid Catalyst

Nanoparticles

Polyolefin

Graphene

MRI Contrast Agents

Polysilicon

Vinyl Chloride Resin

Hydrophilic Nanoparticles

Carbon Nanotube

Electrochemical Devices

Conductive Metal Thin Film

97 patents: Sort by Forward Citations

1. 11925920 - Catalyst for hydrogenation of aromatic compound and preparation method therefor (2024-03-12),

2. 11919999 - Method for preparing polyetherketoneketone and polyetherketoneketone prepared thereby (2024-03-05),

3. 11814480 - Method for producing polyamide with controlled activator addition, and polyamide produced thereby (2023-11-14),

4. 11718713 - Method for producing polyamide by coordinated anionic ring-opening polymerization, and polyamide produced thereby (2023-08-08),

5. 11608304 - Method for preparing cyclododecene and synthesis device therefor (2023-03-21),

6. 11433639 - Lightweight sandwich steel sheet using polyamide, and manufacturing method therefor (2022-09-06),

7. 11267917 - Hybrid catalyst composition, preparation method therefor, and polyolefin prepared using same (2022-03-08),

8. 11248067 - Hybrid supported metallocene catalyst, and polyolefin resin having excellent processability and using same (2022-02-15),

9. 11236186 - Transition metal compound for olefin polymerization catalyst, olefin polymerization catalyst comprising same, and polyolefin polymerized using same (2022-02-01),

10. 11046821 - Emulsion particle, emulsion comprising same, method for manufacturing emulsion (2021-06-29),

11. 11028046 - Toluene diisocyanate purification method (2021-06-08),

12. 10981081 - Distillation apparatus (2021-04-20),

13. 10975184 - High-density ethylene-based polymer using hybrid supported metallocene catalyst and pipe using same (2021-04-13),

14. 10975173 - High-processability high-density ethylene-based polymer using hybrid supported metallocene catalyst, and preparation method therefor (2021-04-13),

15. 10961337 - Method of preparing dicyclopentadiene-based resin and dicyclopentadiene-based resin (2021-03-30),

Company Overview

Hanwha Chemical Corporation, headquartered in Seoul, South Korea, is a leader in polymer chemistry, specializing in the development and production of advanced materials. The company focuses on innovative technologies such as polyamide production, hybrid catalysts, and nanoparticles, catering to diverse industries. Hanwha's expertise extends to polyolefins, graphene, MRI contrast agents, polysilicon, and vinyl chloride resin, positioning it at the forefront of materials science and chemical engineering.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

97 Patents

#79 in Seoul

#195 in South Korea

#7,987 in the World

Seoul, South Korea

Hanwha Chemical Corporation

Forward Citations = 202

256 inventors:

Dong Ok Kim (14 out of 14 patents)

Jin Seo Lee (13 out of 20 patents)

Joo Hee Han (9 out of 13 patents)

4. Wan Jae Myeong (8 out of 15 patents)

5. Ui Gab Joung (8 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hanwha Chemical Corporation. Retrieved from https://idiyas.com/company/hanwha-chemical

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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