ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,486, issued on Aug. 11, was assigned to SHIMADZU Corp. (Kyoto, Japan).
"Pump unit for chromatograph" was invented by Masanori Fujiwara (Kyoto, Japan), Takafumi Nakamura (Kyoto, Japan), Yuki Iijima (Kyoto, Japan) and Kosuke Wada (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pump unit for a chromatograph includes a plunger pump and an upstream check valve. The plunger pump has a pump head and pumps a mobile phase. The upstream check valve is provided upstream of the pump head. The upstream check valve includes a flow-path portion and a temperature regulator. The flow-path portion guides the mobile phase to the plunger pump. The temper...