Sou Hu Cai Jing·2025-12-09 01:31Group 1 - The State Intellectual Property Office of China has granted a patent to China Petroleum & Chemical Corporation and Sinopec Petroleum Exploration Technology Research Institute for a method, system, medium, and device for suppressing background noise in DAS data, with the announcement number CN119905098B and application date of October 2023 [1] - China Petroleum & Chemical Corporation, established in 2000 and located in Beijing, primarily engages in oil and gas extraction, with a registered capital of 12,173,968.9893 million RMB [1] - The company has invested in 268 enterprises, participated in 5,000 bidding projects, holds 45 trademark registrations, and has 5,000 patent records, along with 41 administrative licenses [1] Group 2 - Sinopec Petroleum Exploration Technology Research Institute, founded in 2022 and based in Nanjing, focuses on extraction and auxiliary activities, with a registered capital of 133,611.989369 million RMB [1] - The institute has invested in 2 enterprises, participated in 423 bidding projects, holds 801 patent records, and has 14 administrative licenses [1]