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Daejeon, South Korea

Hexacheck Inc.

USPTO Granted Patents = 32

% Expired Patents = 3.1

EPO Patents = 1

Forward Citations = 138

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3 inventors (with patents filed for the assignee):

In-Duk Hwang (30 out of 31 patents)

Chang Hwan Kim (2 out of 53 patents)

In Deok Hwang (2 out of 2 patents)

Core Competencies:

Low-Power ECG

Biometric Information

Smartwatch

Electrocardiographic Device

Wireless Communication

Portable Sensor

Measurement Method

Smartband

Ring-Shaped Device

Electrocardiogram Measurement

32 patents: Sort by Forward Citations

1. 12697056 - Low-power electrocardiogram (ECG) measurement method (2026-08-04),

2. 12414724 - Electrocardiogram measurement apparatus (2025-09-16),

3. 12414723 - Electrocardiogram measurement apparatus (2025-09-16),

4. 12357219 - Electrocardiogram measurement apparatus (2025-07-15),

5. 12350056 - Electrocardiogram measurement apparatus (2025-07-08),

6. 11931156 - Electrocardiogram measurement apparatus (2024-03-19),

7. 11890075 - Portable complex sensor device for measuring multiple items of biometric information, and measurement method (2024-02-06),

8. 11642066 - Electrocardiogram measurement apparatus (2023-05-09),

9. D933838 - Electrocardiographic device (2021-10-19),

10. D933243 - Electrocardiographic device (2021-10-12),

11. D933235 - Ring-shaped electrocardiographic device (2021-10-12),

12. D930837 - Electrocardiograph for a wireless communication device (2021-09-14),

13. D930165 - Smartband with electrocardiograph electrodes (2021-09-07),

14. D930164 - Smartwatch with electrocardiograph electrodes (2021-09-07),

15. D928963 - Electrocardiograph for a wireless communication device (2021-08-24),

Hexacheck Inc. is a technology company based in Daejeon, South Korea, specializing in advanced verification and validation solutions. The organization focuses on developing innovative software tools that enhance the reliability and security of various digital systems. Hexacheck's expertise spans multiple domains, including cybersecurity, data integrity, and compliance, catering to industries that require robust assurance mechanisms. Through its cutting-edge research, Hexacheck aims to address the evolving challenges in technology and provide effective solutions for its clients.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

32 Patents

#30 in Daejeon

#432 in South Korea

#20,660 in the World

Daejeon, South Korea

Hexacheck Inc.

Forward Citations = 138

3 inventors:

In-Duk Hwang (30 out of 31 patents)

Chang Hwan Kim (2 out of 53 patents)

In Deok Hwang (2 out of 2 patents)

Please report any incorrect information to [email protected]

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