ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,934, issued on July 14, was assigned to Toki Sangyo Co. Ltd (Tokyo).

"Viscometer device" was invented by Takahisa Ishikawa (Tokyo), Naoto Yamada (Tokyo) and Masahiro Kimura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary viscometer device including a rotor and a sample cup includes: a viscometer including the rotor and a closure portion having a larger diameter than the rotor; and a temperature control portion separate from the viscometer, wherein the sample cup is provided at the temperature control portion, and the sample cup is positioned with respect to the closure portion by inserting a vertically movable guide pin of the viscome...