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Gyeonggi-do, South Korea

Dong Yang Piston Co., Ltd.

USPTO Granted Patents = 8

EPO Patents = 7

Forward Citations = 2

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32 inventors (with patents filed for the assignee):

Kwan Ho Ryu (5 out of 5 patents)

Jun Kui Yang (4 out of 4 patents)

Sang Hyuk Jun (3 out of 3 patents)

4. Jeong Keon Lee (3 out of 3 patents)

5. Woo Seok Shim (2 out of 2 patents)

6. Jang Ik Park (2 out of 2 patents)

7. Jun-Kui Yang (2 out of 2 patents)

8. Kwan-Ho Ryu (2 out of 2 patents)

9. Jeong-Keun Lee (2 out of 2 patents)

10. Sang-Bean Park (2 out of 2 patents)

11. Lee Cheol Ji (2 out of 2 patents)

12. In Cheol Yoo (2 out of 2 patents)

13. Sang Shin Lee (1 out of 97 patents)

14. Duck Whan Kim (1 out of 34 patents)

15. Young Bum Kum (1 out of 33 patents)

8 patents: Sort by Forward Citations

1. 12238903 - Water-cooled heat dissipation module assembly (2025-02-25),

2. 11014201 - Laser welding apparatus (2021-05-25),

3. 10760526 - Piston for internal combustion engine (2020-09-01),

4. 10724466 - Piston for vehicle engine and method for manufacturing the same (2020-07-28),

5. 10682686 - Eco-mold apparatus for manufacturing piston, mold apparatus for manufacturing piston, and piston manufacturing method (2020-06-16),

6. 10100777 - Piston for internal combustion engine, and cooling channel core (2018-10-16),

7. 10060327 - Piston for internal combustion engine, and cooling channel core (2018-08-28),

8. 9328823 - Steel piston having cooling channel without flash (2016-05-03),

Dong Yang Piston Co., Ltd. is a leading manufacturer of pistons for automotive and industrial applications. Established in 1974, the company has grown to become a trusted supplier with a strong reputation for quality and reliability. With state-of-the-art facilities and a commitment to innovation, Dong Yang Piston Co., Ltd. continues to provide high-quality products to customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

8 Patents

#90 in Gyeonggi-do

#1,248 in South Korea

Gyeonggi-do, South Korea

Dong Yang Piston Co., Ltd.

Forward Citations = 2

32 inventors:

Kwan Ho Ryu (5 out of 5 patents)

Jun Kui Yang (4 out of 4 patents)

Sang Hyuk Jun (3 out of 3 patents)

4. Jeong Keon Lee (3 out of 3 patents)

5. Woo Seok Shim (2 out of 2 patents)

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