ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,392,596, issued on Aug. 19, was assigned to Murata Machinery Ltd. (Kyoto, Japan).
"Flatness measurement unit" was invented by Tatsuo Tsubaki (Ise, Japan) and Hiroyuki Yokoyama (Ise, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flatness measurement unit is a flatness measurement unit to be placed on a shelf for measuring flatness relating to the degree of deviation from a state in which four predetermined points on the shelf are present on the same plane. The flatness measurement unit includes: a body frame; and four contact sections dispersedly disposed on the body frame and provided so as to be in contact with the respective four predetermine...