ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,214, issued on Nov. 4, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan).
"Negative electrode active material and battery" was invented by Haruyuki Nakanishi (Nagoya, Japan) and Haruo Sawa (Kochi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a negative electrode active material for a battery, the negative electrode active material comprising an iron compound, the iron compound containing a salt of a polyoxygen anion with iron, wherein the polyoxygen anion has a first atom and an oxygen atom, the first atom is at least one type of atom selected from atoms belonging to Group 4, Group 5, Group 6, Group 13, and Group 14 in the perio...