ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,891, issued on March 24, was assigned to SHIMADZU Corp. (Kyoto, Japan).

"Gas chromatograph" was invented by Yuji Nakama (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas chromatograph includes: a gas chromatograph body having an interior space thermally isolated from an outside; at least one sample vaporization unit mounted on an upper portion of the gas chromatograph body, the sample vaporization unit having a housing provided therein with a heating space surrounded by a heater and being configured to vaporize a sample injected into the heating space by heat from the heater and introduce the vaporized sample into the gas chromatog...