ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,313, issued on March 17, was assigned to SHIMADZU Corp. (Kyoto, Japan).

"Air measurement methods using gas chromatograph and gas chromatograph analysis system" was invented by Shinji Uchiyama (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air measurement method of performing measurement by injecting air into a gas chromatograph includes a liquid suction step of sucking a liquid that does not interfere with detection of a predetermined component in air by a gas chromatograph into a syringe to fill the syringe with the liquid, an air suction step of sucking a predetermined amount of air into the syringe after the liquid suction step,...