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Chungcheongnam-Do, South Korea

Pkl Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 2

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5 inventors (with patents filed for the assignee):

Sang Soo Choi (2 out of 2 patents)

Yong Dae Kim (2 out of 8 patents)

Han Byul Kang (2 out of 2 patents)

4. Hyun Joon Cho (2 out of 2 patents)

5. Jong Min Kim (2 out of 20 patents)

2 patents: Sort by Forward Citations

1. 7377984 - Method for cleaning a photomask (2008-05-27),

2. 7186301 - Device and method for cleaning photomask (2007-03-06),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#29 in Chungcheongnam-Do

#3,612 in South Korea

Chungcheongnam-Do, South Korea

Pkl Co., Ltd.

Forward Citations = 2

5 inventors:

Sang Soo Choi (2 out of 2 patents)

Yong Dae Kim (2 out of 8 patents)

Han Byul Kang (2 out of 2 patents)

4. Hyun Joon Cho (2 out of 2 patents)

5. Jong Min Kim (2 out of 20 patents)

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