Method And Apparatus For Producing Fine Spherical Powders From Coarse And Angular Powder Feed Material DORVAL DION; Christopher Alex ;   et al. [PYROGENESIS CANADA INC.] (uspto.report)  "Processes that are capable of spheroidizing powders already exists, but it is believed that no current process can both atomize and spheroidize particles to fall into the desirable ranges used in additive manufacturing". Not sure if this has been posted before.