ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,078, issued on March 18, was assigned to MICRO-TECH (NANJING) Co. LTD. (Nanjing, China).
"Pressure-pump cartridge and pressure pump" was invented by Hongyan Jin (Nanjing, China), Hui Liu (Nanjing, China), Jinwei Pang (Nanjing, China), Derong Leng (Nanjing, China), Changqing Li (Nanjing, China), Jiefeng Xi (Nanjing, China), Ning Li (Nanjing, China), Chunjun Liu (Nanjing, China), Zhi Tang (Nanjing, China) and Jianyu Wei (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a pressure-pump cartridge and a pressure pump, where the pressure-pump cartridge includes a cylinder, where the cylinder has a first chamber, a piston chamber...