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Seoul, South Korea

Oci Company Ltd.

USPTO Granted Patents = 40

% Expired Patents = 10.0

EPO Patents = 15

Trademarks = 2

Forward Citations = 16

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120 inventors (with patents filed for the assignee):

Soo-Whan Kim (4 out of 4 patents)

Yo-Seop Kim (4 out of 4 patents)

Jae-Seok Lee (3 out of 3 patents)

4. Byung-Chul Kim (3 out of 65 patents)

5. Hyun Cheol Kim (3 out of 19 patents)

6. Yongil Kim (3 out of 3 patents)

7. Hee-Chang Ye (3 out of 3 patents)

8. Sung-Ho Jung (3 out of 3 patents)

9. Eun-Hye Jeong (3 out of 3 patents)

10. Se In Yang (3 out of 4 patents)

11. Deok Yun Kim (3 out of 3 patents)

12. Yong Il Kim (3 out of 75 patents)

13. Kyungyeol Kim (3 out of 3 patents)

14. Su-Jin Son (2 out of 2 patents)

15. Taesung Kim (2 out of 78 patents)

Core Competencies:

Silicon Nitride

Silicon Carbide

Carbon Black

Hydrogen Peroxide

Redox Flow Battery

Chemical Vapor Deposition

Etching Solution

Polycrystalline Silicon

High Refractive Index

Pump Speed Control

Rubber Composition

Filament Stabilization

40 patents: Sort by Forward Citations

1. 12679774 - Method for manufacturing silicon nitride substrate (2026-07-14),

2. 12617989 - Abrasive and method for planarization using the same (2026-05-05),

3. 12338544 - Method of preparing a silicon carbide crystal by deposition onto at least a pair of conductive heating elements (2025-06-24),

4. 12258268 - Method for purifying hydrogen peroxide (2025-03-25),

5. 11890621 - Method for separating and collecting single aggregate from fumed silica and method for classifying shape of single aggregate (2024-02-06),

6. 11591224 - Apparatus and method for preparing carbon black (2023-02-28),

7. 11377540 - Coupling agent for rubber composition and rubber composition for tire comprising the same (2022-07-05),

8. 11332622 - Method for preparing a carbon black of high resistivity and a carbon black of high resistivity prepared by this method (2022-05-17),

9. 11104848 - Etching solution for silicon substrate and method for manufacturing semiconductor device using the same (2021-08-31),

10. 11029363 - Method and device for predicting battery life (2021-06-08),

11. 10920086 - Method for oxidizing a carbon black and a method for preparing the carbon black using the same (2021-02-16),

12. 10913591 - Temperature controlled case and temperature controlled package including the same (2021-02-09),

13. 10676222 - Packing system and method (2020-06-09),

14. 10654241 - Paper material for fibrous casing, production method thereof, and fibrous casing (2020-05-19),

15. 10640706 - Etching compositions and method of etching by using the same (2020-05-05),

Company Overview

OCI Company Ltd. is a leading South Korean firm specializing in the production of chemical products and materials. The company focuses on developing advanced materials for various industries, including semiconductors, solar energy, and specialty chemicals. OCI is committed to innovation in chemical manufacturing, emphasizing sustainability and efficiency in its processes. With a strong presence in the global market, OCI continues to enhance its research capabilities to meet the evolving demands of technology and environmental standards.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

40 Patents

#140 in Seoul

#365 in South Korea

#17,048 in the World

Seoul, South Korea

Oci Company Ltd.

Forward Citations = 16

120 inventors:

Soo-Whan Kim (4 out of 4 patents)

Yo-Seop Kim (4 out of 4 patents)

Jae-Seok Lee (3 out of 3 patents)

4. Byung-Chul Kim (3 out of 65 patents)

5. Hyun Cheol Kim (3 out of 19 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oci Company Ltd.. Retrieved from https://idiyas.com/company/oci-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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