Do-hyoung Kim (2 out of 43 patents)
Chang-sun Hwang (2 out of 2 patents)
Company Badge
USPTO Data Jan 1 1976 - Oct 13 2026
2 Patents
#220 in
#3,796 in South Korea
Yu-Il Tech. Co., Ltd.
Forward Citations = 56
2 inventors:
Yu-Il Tech. Co., Ltd.
% Expired Patents = 50.0
Forward Citations = 56
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2 inventors (with patents filed for the assignee):
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yu-Il Tech. Co., Ltd.. Retrieved from https://idiyas.com/company/yu-il-tech-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]
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]
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]