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For the Inventor, By the Inventor

Asan, South Korea

Kwangjin Co., Ltd.

Calculating rank
USPTO Granted Patents = 9

% Expired Patents = 11.1


Forward Citations = 44

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9 inventors (with patents filed for the assignee):

goldMedal Jae Hong Choi (5 out of 23 patents)

silverMedal YoungBae Gong (4 out of 4 patents)

bronzeMedal Seung Tae Kim (2 out of 14 patents)

4.  Jaeseung Lee (1 out of 33 patents)

5.  Kwan Yong Lee (1 out of 3 patents)

6.  Jung Woo Choi (1 out of 1 patent)

7.  Kyeong Jung Yong (1 out of 2 patents)

8.  Taeyong Jeon (1 out of 1 patent)

9.  Jinsu Jang (1 out of 1 patent)


9 patents:

1. 12173537 - Sliding door device for vehicle (2024-12-24),
2. 12116821 - Side door opening and closing apparatus for automobile (2024-10-15),
3. 11919375 - Vehicle door coupling device (2024-03-05),
4. 9777811 - Sliding door device for vehicle (2017-10-03),
5. 9587724 - Sliding device for vehicle door (2017-03-07),
6. 9545834 - Locking device for vehicle sliding door (2017-01-17),
7. 9499031 - Rear door device in vehicle (2016-11-22),
8. 8938852 - Device for checking the door of a vehicle (2015-01-27),
9. 8893436 - Invisible sliding door link structure (2014-11-25),
Company Overview
Kwangjin Co., Ltd. is a leading manufacturer of automotive components in South Korea. With over 30 years of experience, we specialize in producing high-quality steering systems, suspension parts, and powertrain components for various vehicle models. Our commitment to innovation and customer satisfaction has helped us establish a strong presence in the global automotive industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

9 Patents

#15 in Asan

#1,189 in South Korea

Asan, KR
Asan, South Korea

Kwangjin Co., Ltd.

Forward Citations = 44

9 inventors:

goldMedal Jae Hong Choi (5 out of 23 patents)

silverMedal YoungBae Gong (4 out of 4 patents)

bronzeMedal Seung Tae Kim (2 out of 14 patents)

4.  Jaeseung Lee (1 out of 33 patents)

5.  Kwan Yong Lee (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kwangjin Co., Ltd.. Retrieved from https://idiyas.com/company/kwangjin-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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