ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,015, issued on May 6, was assigned to Yanmar Power Technology Co. Ltd. (Osaka, Japan).

"Work assistance system, work system, work assistance method, and program" was invented by Kohei Nashiro (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A work assistance system is a system used together with a work machine, wherein an estimation unit and an output unit are provided. The work machine has an engine as the power source thereof, and travels in a field. On the basis of at least the magnitude of the load of the engine, the estimation unit estimates whether there is an occurrence of a target event that accompanies fluctuations in the load. ...