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)

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),

PSK INC. is a leading technology company specializing in software development and IT solutions. With over 10 years of experience, we provide cutting-edge products and services to a wide range of industries, including healthcare, finance, and retail. Our team of skilled professionals is dedicated to delivering innovative solutions that drive business growth and enhance operational efficiency. Visit our website to learn more about our services and how we can help your business succeed.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

35 Patents

#31 in Gyeonggi-do

#413 in South Korea

#19,126 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)

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