% Expired Patents = 12.5

EPO Patents = 2

Forward Citations = 10

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4 inventors (with patents filed for the assignee):

Changseok Oh (5 out of 19 patents)

Chunho Byun (5 out of 9 patents)

Chun Ho Byun (2 out of 2 patents)

4. Yong Kun Byun (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 12449187 - Multi-joint link hinge and refrigerator including the same (2025-10-21),

2. 12410969 - Multi-joint link hinge and refrigerator having the same (2025-09-09),

3. 12140369 - Multi-joint link hinge and refrigerator including the same (2024-11-12),

4. 12130072 - Multi-joint link hinge and refrigerator including the same (2024-10-29),

5. 11920855 - Multi-joint link hinge and refrigerator having the same (2024-03-05),

6. 11319740 - Multi-link hinge device (2022-05-03),

7. 10941600 - Hinge device for washing machine door (2021-03-09),

8. 10876335 - Multi-link hinge device (2020-12-29),

Company Overview

Eptech Co., Ltd. is a leading technology company specializing in advanced electronic products and services. With a focus on innovation, quality, and customer satisfaction, we strive to deliver cutting-edge solutions for a wide range of industries. Our experienced team of professionals is dedicated to providing top-notch engineering and manufacturing services to meet our clients' specific needs. Visit our website to learn more about our offerings and how we can help you succeed in the fast-paced world of technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

8 Patents

#89 in Gyeonggi-do

#1,307 in South Korea

Gyeonggi-do, South Korea

Eptech Co., Ltd.

Forward Citations = 10

4 inventors:

Changseok Oh (5 out of 19 patents)

Chunho Byun (5 out of 9 patents)

Chun Ho Byun (2 out of 2 patents)

4. Yong Kun Byun (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Eptech Co., Ltd.. Retrieved from https://idiyas.com/company/eptech-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]

2 patents (EPO):

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]