Company Badge
USPTO Data Jan 1 1976 - Oct 13 2026
1 Patents
#291 in Nanjing
#18,742 in China
Cccc Tunnel Engineering Co., Ltd.
Forward Citations = 0
11 inventors:
Cccc Tunnel Engineering Co., Ltd.
Forward Citations = 0
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11 inventors (with patents filed for the assignee):
Hui Li (1 out of 3 patents)
Lei Zhang (1 out of 14 patents)
Chao Zhang (1 out of 3 patents)
4. Xiao Yan (1 out of 1 patent)
5. Yahui Li (1 out of 1 patent)
6. Yisheng Wang (1 out of 1 patent)
7. Ping Lu (1 out of 1 patent)
8. Yazhou Zhang (1 out of 1 patent)
9. Chi Wei (1 out of 1 patent)
10. Yuqiang Liang (1 out of 1 patent)
11. Zhanhu Yao (1 out of 1 patent)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cccc Tunnel Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/cccc-tunnel-engineering-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]