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Gum-si, South Korea

Woongjin Chemical Co., Ltd.

USPTO Granted Patents = 11

EPO Patents = 1

Trademarks = 5

Forward Citations = 53

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27 inventors (with patents filed for the assignee):

Ja-Young Koo (5 out of 10 patents)

Jong Hwa Lee (5 out of 66 patents)

Sung Pyo Hong (3 out of 4 patents)

4. Sung Dae Chi (2 out of 2 patents)

5. Hoo-Sung Chang (2 out of 2 patents)

6. Il-Sun Ryu (2 out of 2 patents)

7. Kwan Young Ryu (2 out of 2 patents)

8. Doo Ri Kim (2 out of 3 patents)

9. Bong Jun Cha (2 out of 2 patents)

10. Su Jeong Lim (2 out of 2 patents)

11. Duk Jae Cho (1 out of 1 patent)

12. Myeong Ki Baek (1 out of 1 patent)

13. Hwang Kyu Lee (1 out of 1 patent)

14. Seung Jin Ko (1 out of 1 patent)

15. Yong-Doo Jung (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 9839879 - Forward osmosis membrane for seawater desalination and method for preparing the same (2017-12-12),

2. 9248410 - Forward osmosis membrane for seawater desalination and method for preparing the same (2016-02-02),

3. 9170355 - Reflective polarizer having a dispersed polymer (2015-10-27),

4. 9089820 - Selective membrane having a high fouling resistance (2015-07-28),

5. 8986832 - Optical-modulation object (2015-03-24),

6. 8820540 - Method for preparing a filtration membrane and filtration membrane prepared by said method (2014-09-02),

7. 8353326 - Three-dimensional fabric with three-layered structure (2013-01-15),

8. 7913857 - Selective membrane having a high fouling resistance (2011-03-29),

9. 7694696 - 3D fabric and preparing thereof (2010-04-13),

10. 7537697 - Selective membrane having a high fouling resistance (2009-05-26),

11. 7479300 - Composite polyamide reverse osmosis membrane and method of producing the same (2009-01-20),

Woongjin Chemical Co., Ltd. is a leading chemical company in South Korea, specializing in the production of various chemicals including fine chemicals, functional materials, and eco-friendly products. With a strong emphasis on innovation and sustainability, Woongjin Chemical strives to provide high-quality products to meet the needs of its customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

11 Patents

#1 in Gum-si

#959 in South Korea

#50,159 in the World

Gum-si, South Korea

Woongjin Chemical Co., Ltd.

Forward Citations = 53

27 inventors:

Ja-Young Koo (5 out of 10 patents)

Jong Hwa Lee (5 out of 66 patents)

Sung Pyo Hong (3 out of 4 patents)

4. Sung Dae Chi (2 out of 2 patents)

5. Hoo-Sung Chang (2 out of 2 patents)

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