Group 1 - The State Intellectual Property Office has granted a patent for a "water sample collection device for tunnel lining leakage" to four companies, including Guangzhou Institute of Building Science, Zhuhai Dahengqin Co., Ltd., China Railway 16th Bureau Group Co., Ltd., and Guangzhou Construction Engineering Quality Safety Testing Center Co., Ltd. The patent was applied for on May 2020 and has the authorization announcement number CN111855286B [1][2] - Guangzhou Institute of Building Science, established in 2008, has a registered capital of 60 million RMB and has participated in 456 bidding projects, holding 566 patents and 17 trademarks [1] - Zhuhai Dahengqin Co., Ltd., founded in 2013, has a registered capital of 460 million RMB and has participated in 1,421 bidding projects, holding 42 patents [1] - China Railway 16th Bureau Group Co., Ltd., established in 1995, has a registered capital of 443 million RMB and has participated in 5,000 bidding projects, holding 1,907 patents and 5 trademarks [2] - Guangzhou Construction Engineering Quality Safety Testing Center Co., Ltd., founded in 2000, has a registered capital of 12.6 million RMB and has participated in 5,000 bidding projects, holding 264 patents [2]
多家企业取得隧道衬砌的渗漏水水样采集装置专利
Sou Hu Cai Jing·2025-07-08 05:14