US Patent Issued to FREEMELT on Jan. 20 for "Powder smoke detection during additive manufacturing" (Swedish Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,253, issued on Jan. 20, was assigned to FREEMELT AB (Molndal, Sweden).

"Powder smoke detection during additive manufacturing" was invented by Robin Stephansen (Molndal, Sweden) and Ulf Ackelid (Gothenburg, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "In accordance with one or more embodiments herein, an arrangement for additive manufacturing by selective fusion, using an electron beam, of a three-dimensional product from a powder bed, is provided. The arrangement comprises at least one electron detecting arrangement arranged to detect powder smoke by detecting electrons which have been scattered by the electron beam hitting powder particles...