For the Inventor, By the Inventor

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Hwaseong-si, South Korea

Psk Holdings Inc.

USPTO Granted Patents = 2

Trademarks = 5

Forward Citations = 1

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5 inventors (with patents filed for the assignee):

Je Hyeok Ryu (1 out of 1 patent)

Jung-Hyun Kang (1 out of 2 patents)

Jae Kyeong Yoo (1 out of 1 patent)

4. Hyeong Mo Yoo (1 out of 1 patent)

5. Nam Young Kim (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 11854774 - Plasma detecting device (2023-12-26),

2. 10964565 - Substrate processing apparatus and method (2021-03-30),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#48 in Hwaseong-si

#3,610 in South Korea

Hwaseong-si, South Korea

Psk Holdings Inc.

Forward Citations = 1

5 inventors:

Je Hyeok Ryu (1 out of 1 patent)

Jung-Hyun Kang (1 out of 2 patents)

Jae Kyeong Yoo (1 out of 1 patent)

4. Hyeong Mo Yoo (1 out of 1 patent)

5. Nam Young Kim (1 out of 1 patent)

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