AM 4 AM gains US patent for cold plasma-treated metal powders
AM 4 AM, a producer of metal powders for Additive Manufacturing based in Foetz, Luxembourg, has shared that its patent is now officially approved in the United States, highlighting the international recognition of its plasma powder treatment process. It also supports wider accessibility of its advanced metal powders.
The company’s cold plasma technology works by evenly coating the surface of metal powders with ceramic particles to produce a dense microstructure that is reported to improve the powder’s durability, processability and reliability. The process requires only 2 kW during each hour of processing and runs entirely on nitrogen gas, reducing the use of potentially harmful chemicals.
This news follows on from the Japanese and Chinese patents that the company received in October and December 2025, respectively.
