ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,715, issued on Aug. 19, was assigned to SHIMADZU Corp. (Kyoto, Japan).
"Atomic absorption spectrophotometer" was invented by Hikaru Ishihara (Kyoto, Japan) and Hidemiki Hayashi (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An atomic absorption spectrophotometer includes a first holder, a fixed portion, and a movable portion. In an inner circumferential surface of the fixed portion, a first female thread portion is formed from an end on a rear side toward a front side in a direction of fitting of the fixed portion to the first holder, and a small-diameter portion having an inner diameter smaller than a minimum diameter of the first fem...