US Patent Issued to BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY AND EQUIPMENT ENGINEERING on Jan. 28 for "Check valve for low pressure operating conditions" (Chinese Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,673, issued on Jan. 28, was assigned to BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY AND EQUIPMENT ENGINEERING CORPORATION LIMITED (Beijing).

"Check valve for low pressure operating conditions" was invented by Xiaoxia Wei (Beijing), Xianyu Bao (Beijing), Na Li (Beijing), Yixiao Wang (Beijing), Shangang Guo (Beijing), Ling Bian (Beijing), Honghui Yu (Beijing), Peng Shuai (Beijing), Xiaofeng Li (Beijing), Xuebin Wang (Beijing), Dianjing Chen (Beijing) and Xuli Tang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A check valve for low pressure operating conditions includes: a valve cover, a valve body, and an upper diaphragm between the body and ...