Sou Hu Cai Jing·2025-07-08 04:46Group 1 - The State Intellectual Property Office of China granted a patent for "Preparation of Polycaprolactone Shape Memory Materials and Their Preparation Methods and Applications" to Sinopec Nanjing Chemical Research Institute Co., Ltd., China Petroleum & Chemical Corporation, and Sinopec Group Nanjing Chemical Industry Co., Ltd. The patent announcement number is CN116041680B, with an application date of October 2022 [1][2][3] Group 2 - Sinopec Nanjing Chemical Research Institute Co., Ltd. was established in 1994, located in Nanjing, with a registered capital of 80 million RMB. The company has made investments in 3 enterprises, participated in 461 bidding projects, and holds 1,649 patent records [1] - China Petroleum & Chemical Corporation was founded in 2000, based in Beijing, with a registered capital of approximately 12,173.97 million RMB. The company has invested in 263 enterprises, engaged in 5,000 bidding projects, and possesses 5,000 patent records [1] - Sinopec Group Nanjing Chemical Industry Co., Ltd. was established in 1985, also located in Nanjing, with a registered capital of approximately 2,402.15 million RMB. The company has invested in 16 enterprises, participated in 5,000 bidding projects, and holds 569 patent records [2]