% Expired Patents = 80.0

EPO Patents = 1

Trademarks = 1

Forward Citations = 16

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16 inventors (with patents filed for the assignee):

Gwan Chong Joo (2 out of 2 patents)

Jae Shik Choi (2 out of 2 patents)

Ki Woo Chung (2 out of 2 patents)

4. Do Hoon Kim (2 out of 2 patents)

5. Jin-seob Kim (1 out of 2 patents)

6. Dae-Jin Kim (1 out of 10 patents)

7. U-Seock Moon (1 out of 1 patent)

8. Jong-Kyu Han (1 out of 1 patent)

9. Byoung-Moon Hwang (1 out of 1 patent)

10. Je-Kil Ryu (1 out of 1 patent)

11. Hyun-Jung Kim (1 out of 1 patent)

12. Hsieh Wen-Pin (1 out of 1 patent)

13. Huang Chung-Yen (1 out of 1 patent)

14. Lin Chih-Kai (1 out of 1 patent)

15. Hu Chien-Hsin (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 8055058 - Apparatus and method for detecting defects in wafer using line sensor camera (2011-11-08),

2. 7680557 - System for processing semiconductor substrate by using laser and method of the same (2010-03-16),

3. 7435346 - Strengthening construction for depressing cap of water filter (2008-10-14),

4. 7181101 - Optical measuring system with arrayed optical receivers and method thereof (2007-02-20),

5. 7010192 - Optical fiber array block embedding optical device therein (2006-03-07),

Company Overview

Hantech Co., Ltd. is a leading technology company specializing in the development and manufacturing of innovative electronic products. With a focus on quality and customer satisfaction, Hantech Co., Ltd. offers a wide range of products including consumer electronics, automotive electronics, and home appliances. The company is committed to delivering cutting-edge solutions to meet the evolving needs of the market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

5 Patents

#126 in Gyeonggi-do

#1,881 in South Korea

Gyeonggi-do, South Korea

Hantech Co., Ltd.

Forward Citations = 16

16 inventors:

Gwan Chong Joo (2 out of 2 patents)

Jae Shik Choi (2 out of 2 patents)

Ki Woo Chung (2 out of 2 patents)

4. Do Hoon Kim (2 out of 2 patents)

5. Jin-seob Kim (1 out of 2 patents)

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

1 patent (EPO):

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]