Sou Hu Cai Jing·2025-11-27 06:15Group 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 and device related to "cavern geological scale volume calculation" [1] - China Petroleum & Chemical Corporation, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB [1] - The company has invested in 268 enterprises, participated in 5,000 bidding projects, and holds 45 trademark registrations and 5,000 patents [1] Group 2 - Sinopec Petroleum Exploration Technology Research Institute, founded in 2022, focuses on extraction and auxiliary activities, with a registered capital of approximately 133.61 million RMB [1] - The institute has invested in 2 enterprises, participated in 402 bidding projects, and holds 801 patents [1] - Additionally, the institute has 14 administrative licenses [1]