US Patent Issued to YAMAHA HATSUDOKI on June 30 for "Marine propulsion device and marine vessel" (Japanese Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,341, issued on June 30, was assigned to YAMAHA HATSUDOKI K.K. (Shizuoka, Japan).

"Marine propulsion device and marine vessel" was invented by Keiichi Tanimura (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A marine propulsion device includes a controller configured or programmed to calculate a rotation speed of a rotor based on a magnetic flux density detected by a detector, and correct a deviation in a calculated magnet position of the rotor due to an eddy current generated in a metal based on the calculated rotation speed of the rotor."

The patent was filed on Feb. 1, 2024, under Application No. 18/429,511.

*For further informat...