For the Inventor, By the Inventor

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Seoul, South Korea

Leestech System Co., Ltd.

USPTO Granted Patents = 1

Forward Citations = 0

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6 inventors (with patents filed for the assignee):

Jae Hong Lee (1 out of 54 patents)

Won Sik Lee (1 out of 2 patents)

Soon Hyang Lee (1 out of 1 patent)

4. Na Young Lee (1 out of 1 patent)

5. Hyun Sik Lee (1 out of 1 patent)

6. Soon Wi Kim (1 out of 1 patent)

1 patent: Sort by Forward Citations

1. 11857339 - Headgear-type device for hazardous air quality warning and air quality improvement (2024-01-02),

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USPTO Data Jan 1 1976 - Dec 23 2025

1 Patents

#1,756 in Seoul

#5,496 in South Korea

Seoul, South Korea

Leestech System Co., Ltd.

Forward Citations = 0

6 inventors:

Jae Hong Lee (1 out of 54 patents)

Won Sik Lee (1 out of 2 patents)

Soon Hyang Lee (1 out of 1 patent)

4. Na Young Lee (1 out of 1 patent)

5. Hyun Sik Lee (1 out of 1 patent)

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