Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
CZ

Chuigang Zeng

CC China Railway Tunnel Group Co.: 1 patents #1 of 6Top 20%
Overall (2025): #419,855 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12339199 TBM tunneling test bench for microwave-assisted rotary rock breaking Gaoming Lu, Kairong Hong, Jianjun Zhou, Yandong Yang, Limeng Zhang 2025-06-24