The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2025
Filed:
Nov. 05, 2021
Fundació Eurecat, Cerdanyola del Vallès, ES;
Alberto Ruiz Rodríguez, Barcelona, ES;
Francisco Javier Planta Torralba, El Masnou, ES;
Raffaele Caminati, Vilassar de Mar, ES;
FUNDACIÓ EURECAT, Cerdanyola del Vallès, ES;
Abstract
An apparatus for powder spheroidisation by microwave-induced plasma comprises a microwave generator, a microwave cavity, a waveguide connecting the microwave generator to the microwave cavity, a plasma tube partially located in the microwave cavity, a powder supply connected to the plasma tube to feed a powder precursor flow thereinto, a gas supply connected to the plasma tube to feed a process gas flow thereinto, in order to form a plasma torch in the plasma tube by coupling the process gas flow with the microwave radiation, and a compressed air supply. The microwave cavity comprises at least one opening for the compressed air so that the latter can cool the plasma tube from outside, and the gas supply is connected to the powder supply to let the process gas carry the powder precursor into the plasma tube, and so into the plasma torch in order to make spheroids from the powder precursor by in-flight melting.