Jin Rong Jie·2025-05-05 01:48Group 1 - The State Intellectual Property Office of China has published a patent application by China National Petroleum Corporation (CNPC) for a device and method for producing polyester polyols, indicating innovation in the production process [1] - The patent, published under CN119897054A, was applied for on October 2023 and aims to enhance the mixing effect during the pre-esterification stage of polyester polyol production while reducing equipment investment and energy consumption [1] - The device includes a cylindrical body with various inlets and outlets for raw materials and protective gases, allowing for a more efficient production process [1] Group 2 - China National Petroleum Corporation, established in 1999 and based in Beijing, primarily engages in gas production and supply, with a registered capital of approximately 18.3 billion RMB [2] - The company has made investments in 1,279 enterprises and participated in 508 bidding projects, showcasing its extensive involvement in the industry [2] - CNPC holds 33 trademark registrations and 5,000 patent records, along with 168 administrative licenses, reflecting its significant intellectual property portfolio [2]