US Patent Issued to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude on July 14 for "Surface treatment method" (Chinese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,678,879, issued on July 14, was assigned to L'Air Liquide Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude (Paris).

"Surface treatment method" was invented by Wentan Wu (Shanghai), Yunhong Yu (Shanghai) and Zhijun Huang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surface treatment method. Atmospheric plasma is provided, and an object to be treated is placed in an atmospheric plasma atmosphere, wherein a residual oxygen level in the atmospheric plasma atmosphere is lower than a pre-set value. A soldering process is integrated into an atmospheric plasma treatment system without any flux protection, and it is ensure...