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Seoul, South Korea

Samhongsa Co., Ltd.

USPTO Granted Patents = 25

EPO Patents = 1

Trademarks = 1

Forward Citations = 287

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32 inventors (with patents filed for the assignee):

Dong Kwan Ma (4 out of 4 patents)

Young Ki Yoon (3 out of 3 patents)

Jong Hoon Lee (3 out of 39 patents)

4. Chang Seob Song (3 out of 5 patents)

5. Jin Hyung An (2 out of 2 patents)

6. Woo Kee Min (2 out of 3 patents)

7. Yong A Park (2 out of 2 patents)

8. Song Hur (2 out of 2 patents)

9. Woo-Kee Min (2 out of 2 patents)

10. Euihyun Kim (1 out of 1 patent)

11. IInam Kang (1 out of 1 patent)

12. Young-Sang Jeon (1 out of 1 patent)

13. In-Sun Jang (1 out of 1 patent)

14. Song Huh (1 out of 1 patent)

15. Young San Jean (1 out of 2 patents)

25 patents: Sort by Forward Citations

1. 12049394 - Multi-step height adjuster (2024-07-30),

2. D1019171 - Cylinder for compressed gas (2024-03-26),

3. 11592070 - Gas cylinder and gas spring for preventing gas leakage, and method for manufacturing same (2023-02-28),

4. 10499730 - Height-adjustable desk (2019-12-10),

5. 10477970 - Gas cylinder (2019-11-19),

6. D845037 - Desk (2019-04-09),

7. D830739 - Desk (2018-10-16),

8. 9287748 - Spindle motor (2016-03-15),

9. 9209668 - Spindle motor having an electrostatic discharge path (2015-12-08),

10. 8928209 - Motor and method of manufacturing the same (2015-01-06),

11. D707257 - Base plate for spindle motor (2014-06-17),

12. 7847451 - Spindle motor (2010-12-07),

13. 7721640 - Cable operated gas cylinder (2010-05-25),

14. 7134634 - Column unit (2006-11-14),

15. 7059592 - Gas cylinder (2006-06-13),

Samhongsa Co., Ltd. is a renowned company specializing in manufacturing and supplying high-quality railroad models and components. With a rich history spanning several decades, the company has established itself as a leading player in the industry. Samhongsa's commitment to excellence and innovation has earned it a strong reputation among railway enthusiasts and professionals alike. Their comprehensive range of products includes trains, locomotives, passenger coaches, freight cars, and various parts and accessories. Through their website, customers can explore their extensive catalog and learn more about their commitment to delivering top-notch railway models and components.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

25 Patents

#159 in Seoul

#507 in South Korea

#24,910 in the World

Seoul, South Korea

Samhongsa Co., Ltd.

Forward Citations = 287

32 inventors:

Dong Kwan Ma (4 out of 4 patents)

Young Ki Yoon (3 out of 3 patents)

Jong Hoon Lee (3 out of 39 patents)

4. Chang Seob Song (3 out of 5 patents)

5. Jin Hyung An (2 out of 2 patents)

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