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Seongnam, South Korea

Ctk Co., Ltd

USPTO Granted Patents = 18

% Expired Patents = 38.9

EPO Patents = 14

Forward Citations = 82

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14 inventors (with patents filed for the assignee):

In Yong Chung (10 out of 23 patents)

Jin Woo Kim (8 out of 34 patents)

In Young Um (3 out of 7 patents)

4. Won Eui Lee (3 out of 5 patents)

5. Kyung Ho Kang (3 out of 7 patents)

6. Myung Joong Kim (2 out of 2 patents)

7. Ji Yong Lee (2 out of 15 patents)

8. Jung Hun Jun (2 out of 2 patents)

9. Do Hoon Lee (1 out of 77 patents)

10. Yeong Min Eom (1 out of 1 patent)

11. Sun Young Choi (1 out of 12 patents)

12. Sung Hyeok Choi (1 out of 8 patents)

13. Andrew S Kim (1 out of 4 patents)

14. Minji Oh (1 out of 1 patent)

18 patents: Sort by Forward Citations

1. 12414619 - Eco cosmetic container (2025-09-16),

2. 11963600 - Cosmetic container having wiper capable of removing cosmetic liquid from application support rod having non-circular cross-sectional area (2024-04-23),

3. 11622613 - Stick type cosmetic container (2023-04-11),

4. D956784 - Display screen with graphical user interface (2022-07-05),

5. 11140965 - Airtight lip cosmetic case of which inside is doubly sealed (2021-10-12),

6. 11006723 - Push type cosmetic container (2021-05-18),

7. 10973300 - Airtight cosmetic-pencil container (2021-04-13),

8. 10722020 - Double wiping structure for toothbrush-type mascara wand (2020-07-28),

9. 10537164 - Cosmetic container with anti-contamination function for wiper (2020-01-21),

10. 10485324 - Stick type cosmetic case having screw structure (2019-11-26),

11. 10334935 - One-touch compact case having refillable structure (2019-07-02),

12. 10334931 - Puff-embedded cosmetic powder container (2019-07-02),

13. 10206480 - Porous pad for impregnation of liquid cosmetic composition and liquid-cosmetic-composition impregnating method using the same (2019-02-19),

14. 9930952 - Compact type of airtight cosmetic container (2018-04-03),

15. 9894980 - Rotary-push type cosmetic container (2018-02-20),

Ctk Co., Ltd, based in Seongnam, South Korea, specializes in advanced technology solutions, focusing on the development and manufacturing of high-quality electronic components and systems. The company is recognized for its expertise in areas such as telecommunications, automotive electronics, and industrial automation. Ctk Co., Ltd is committed to innovation and quality, aiming to enhance connectivity and efficiency across various sectors, thereby contributing to the technological advancement of the region and beyond.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

18 Patents

#39 in Seongnam

#686 in South Korea

#34,187 in the World

Seongnam, South Korea

Ctk Co., Ltd

Forward Citations = 82

14 inventors:

In Yong Chung (10 out of 23 patents)

Jin Woo Kim (8 out of 34 patents)

In Young Um (3 out of 7 patents)

4. Won Eui Lee (3 out of 5 patents)

5. Kyung Ho Kang (3 out of 7 patents)

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