For the Inventor, By the Inventor

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Gyeonggi-do, South Korea

Psk Inc.

USPTO Granted Patents = 35

% Expired Patents = 2.9

EPO Patents = 1

Trademarks = 8

Forward Citations = 52

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69 inventors (with patents filed for the assignee):

Jong Chan Lee (5 out of 16 patents)

Kwang Sung Yoo (5 out of 5 patents)

A Ram Kim (3 out of 5 patents)

4. Han Saem Rhee (3 out of 3 patents)

5. Geon Jong Kim (3 out of 3 patents)

6. Kwang-Sung Yoo (3 out of 3 patents)

7. Jeong Hee Cho (2 out of 7 patents)

8. Jung-Hyun Kang (2 out of 2 patents)

9. Seung-Kook Yang (2 out of 2 patents)

10. Jong Woo Park (2 out of 3 patents)

11. Jong Sik Lee (2 out of 2 patents)

12. Sung Jin Yoon (2 out of 3 patents)

13. Ju Young Park (2 out of 6 patents)

14. Hee Sun Chae (2 out of 2 patents)

15. Chang Weon Lee (2 out of 2 patents)

Core Competencies:

Substrate Treatment

Plasma Generating Unit

Support Unit

Dielectric Plate

Cooling Method

Transfer Apparatus

Light Guiding Plate

Hollow Cathode Plasma

Baffle

Two-Way Gate Valve

Substrate Processing Device

Alignment Method

35 patents: Sort by Forward Citations

1. 12738463 - Substrate treatment apparatus and substrate treatment method (2026-09-15),

2. 12725765 - Apparatus for treating substrate and method for treating substrate (2026-09-01),

3. 12633504 - Substrate processing apparatus (2026-05-19),

4. 12620560 - Apparatus for treating substrate and method for aligning dielectric plate using the same (2026-05-05),

5. 12562346 - Apparatus for processing substrate (2026-02-24),

6. 12531216 - Support unit and substrate processing apparatus including same (2026-01-20),

7. 12476076 - Substrate processing apparatus (2025-11-18),

8. 12424417 - Substrate processing apparatus and substrate processing method (2025-09-23),

9. 12417901 - Apparatus for treating substrate and method for aligning dielectric plate using the same (2025-09-16),

10. 12387911 - Support unit, apparatus for treating substrate, and method for treating substrate (2025-08-12),

11. 12278091 - Substrate processing apparatus and substrate processing method (2025-04-14),

12. 12062525 - Support unit, and apparatus for treating substrate with the same (2024-08-13),

13. 11862434 - Substrate processing apparatus (2024-01-02),

14. 11817291 - Faraday shield and apparatus for treating substrate (2023-11-14),

15. 11776791 - Substrate processing apparatus and substrate processing method (2023-10-03),

Company Overview

Psk Inc. is a South Korean company based in Gyeonggi-do, specializing in advanced technology solutions and manufacturing processes. The organization focuses on developing innovative products and services across various sectors, including electronics and industrial applications. With a commitment to research and development, Psk Inc. aims to enhance efficiency and performance in its offerings, contributing to the technological landscape both locally and globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

35 Patents

#31 in Gyeonggi-do

#409 in South Korea

#19,148 in the World

Gyeonggi-do, South Korea

Psk Inc.

Forward Citations = 52

69 inventors:

Jong Chan Lee (5 out of 16 patents)

Kwang Sung Yoo (5 out of 5 patents)

A Ram Kim (3 out of 5 patents)

4. Han Saem Rhee (3 out of 3 patents)

5. Geon Jong Kim (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Psk Inc.. Retrieved from https://idiyas.com/company/psk

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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