For the Inventor, By the Inventor

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Gyeonggi, South Korea

Chemtech Research Incorporation

USPTO Granted Patents = 2

% Expired Patents = 100.0

Forward Citations = 3

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11 inventors (with patents filed for the assignee):

Wan Joo Kim (2 out of 6 patents)

Jae Won Choi (1 out of 31 patents)

Dong Jo Chang (1 out of 1 patent)

4. Eun Young Yoon (1 out of 1 patent)

5. Gun Bong Lee (1 out of 1 patent)

6. Myung Hwa Kim (1 out of 1 patent)

7. Jong Yek Park (1 out of 1 patent)

8. Jung Min Jang (1 out of 1 patent)

9. Soon Ok Kim (1 out of 1 patent)

10. Dong Hoo Kim (1 out of 1 patent)

11. Kyoung Soo Kim (1 out of 13 patents)

2 patents: Sort by Forward Citations

1. 7622612 - Tricyclic derivatives and their use (2009-11-24),

2. 7119229 - Alkaloid derivative and a pharmaceutical composition containing the same (2006-10-10),

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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#30 in Gyeonggi

#3,785 in South Korea

Gyeonggi, South Korea

Chemtech Research Incorporation

Forward Citations = 3

11 inventors:

Wan Joo Kim (2 out of 6 patents)

Jae Won Choi (1 out of 31 patents)

Dong Jo Chang (1 out of 1 patent)

4. Eun Young Yoon (1 out of 1 patent)

5. Gun Bong Lee (1 out of 1 patent)

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