Group 1 - The State Intellectual Property Office of China shows that China National Petroleum Corporation (CNPC) has applied for a patent titled "Control Circuit for Delayed Shutdown of Main Motor During Cooling Fan Failure," with publication number CN121273669A and application date of July 2024 [1] - The patent involves a control circuit that allows for a delayed shutdown of the main motor for 2 hours after a cooling fan failure, enabling production personnel to switch to a backup pump, thereby significantly reducing the likelihood of main motor shutdown due to cooling fan issues [1] Group 2 - According to Tianyancha data, CNPC was established in 1999 and is based in Beijing, primarily engaged in oil and gas extraction [2] - The company has a registered capital of 18,302,097 million RMB and has invested in 1,296 enterprises, participated in 443 bidding projects, and holds 38 trademark records and 5,000 patent records, along with 168 administrative licenses [2]

Group 1 - The State Intellectual Property Office of China has granted a patent to China Petroleum & Chemical Corporation for a "sulfurized hydrogenation catalyst and its preparation method," with the announcement number CN119327496B and application date of July 2023 [1] - China Petroleum & Chemical Corporation, established in 2000 and based in Beijing, primarily engages in oil and gas extraction, with a registered capital of 121,739.6893 million RMB [1] - The company has made investments in 267 enterprises, participated in 5,000 bidding projects, holds 45 trademark registrations, and possesses 5,000 patents, along with 41 administrative licenses [1] Group 2 - Sinopec (Dalian) Petroleum and Chemical Research Institute Co., Ltd., established in 2022 and located in Dalian, focuses on research and experimental development, with a registered capital of 3,384.5908 million RMB [1] - The research institute has invested in 1 enterprise, participated in 2,799 bidding projects, holds 4,999 patents, and has 65 administrative licenses [1]