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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#137 in Qingdao, Shandong 266111
#11,649 in China
Crrc Qingdao Sifang Co., Ltd.
Forward Citations = 0
16 inventors:
Crrc Qingdao Sifang Co., Ltd.
Calculating rank
EPO Patents = 1
Forward Citations = 0
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16 inventors (with patents filed for the assignee):
Peng Wang (1 out of 14 patents)
Fengchao Wang (1 out of 2 patents)
Zhiyi Zhang (1 out of 2 patents)
4. Guolong Ma (1 out of 2 patents)
5. Zhendong Mao (1 out of 3 patents)
6. Shuaizhen Li (1 out of 1 patent)
7. Xiaohui Han (1 out of 1 patent)
8. Dongyu Zhao (1 out of 1 patent)
9. Jiyu Han (1 out of 1 patent)
10. Xin Miao (1 out of 1 patent)
11. Fujie Jiang (1 out of 1 patent)
12. Xu Wang (3 patents)
13. Hongyong Cao (3 patents)
14. Yang Feng (0 patent)
15. Xu Han (0 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Crrc Qingdao Sifang Co., Ltd.. Retrieved from https://idiyas.com/company/crrc-qingdao-sifang
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]
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]