% Expired Patents = 33.3

Forward Citations = 0

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14 inventors (with patents filed for the assignee):

Ki Ho Park (2 out of 4 patents)

Byung Jo Kim (2 out of 19 patents)

Hyon Pil Yu (1 out of 1 patent)

4. Kyo-Duck Ahn (1 out of 1 patent)

5. Jong-Gi Lee (1 out of 1 patent)

6. Choun-San Kim (1 out of 1 patent)

7. Young-Shin Kim (1 out of 1 patent)

8. Hyun Chul Kang (1 out of 10 patents)

9. Ji Hye Bae (1 out of 1 patent)

10. Song Yi Kim (1 out of 12 patents)

11. Won Jun Jeong (1 out of 1 patent)

12. Bu Hyeon Kim (1 out of 1 patent)

13. Hyun Pil Yu (1 out of 1 patent)

14. Won Gook Shin (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 12091635 - Fluorinated surfactant composition (2024-09-17),

2. 10851044 - Method for preparing glutamate-based surfactant (2020-12-01),

3. 8283430 - Composition for manufacturing a carboxylic group-containing polymer and a polymer manufactured by using the same (2012-10-09),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#969 in Seoul

#2,797 in South Korea

Seoul, South Korea

Ak Chemtech Co., Ltd.

Forward Citations = 0

14 inventors:

Ki Ho Park (2 out of 4 patents)

Byung Jo Kim (2 out of 19 patents)

Hyon Pil Yu (1 out of 1 patent)

4. Kyo-Duck Ahn (1 out of 1 patent)

5. Jong-Gi Lee (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ak Chemtech Co., Ltd.. Retrieved from https://idiyas.com/company/ak-chemtech-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]