John J. Croat and Masato Sagawa simultaneously and independently invented the world’s most powerful permanent magnet, the neodymium (NdFeB) magnet, and established two different manufacturing methods to produce it. Their achievement is recognized by the 2023 Honda Prize, awarded by the Honda Foundation. This article highlights each inventor’s research contributions.

The manufacture of electric motors using additive methods offers potential advantages of increased efficiency, weight reduction, and customizability over traditional processes. This article describes some key developments and challenges related to additively manufactured electric motors in terms of manufacturing, materials development, and design.