SOFE(SZ:000852) Sou Hu Cai Jing·2025-08-01 06:52Group 1 - The State Intellectual Property Office of China granted a patent for a "composite impact drilling tool" to Sinopec Jianghan Drilling Machinery Co., Ltd. and Sinopec Petroleum Machinery Co., Ltd. The patent authorization announcement number is CN114809906B, with an application date of May 2022 [1] - Sinopec Jianghan Drilling Machinery Co., Ltd. was established in 2007, located in Wuhan, primarily engaged in the automotive manufacturing industry, with a registered capital of 400 million RMB. The company has participated in 5,000 bidding projects and holds 372 patents [1] - Sinopec Petroleum Machinery Co., Ltd. was founded in 1998, also located in Wuhan, focusing on the petroleum, coal, and other fuel processing industries, with a registered capital of approximately 9.56 billion RMB. The company has invested in 15 enterprises, participated in 1,463 bidding projects, and holds 1,644 patents [1]