Patents by Inventor Changzheng GUO

Changzheng GUO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Surface treatment method of metal powder and surface passivated metal powder
    Publication number: 20240300013
    Abstract: Provided is a surface treatment method of metal powder and surface passivated metal powder. Herein, the surface treatment method uses passivation solution to treat the metal powder, to form a passivation film on the surface of the metal powder; the passivation solution passes through the metal powder by a flowing method; and the average particle size of the metal powder is 0.1˜100 ?m. A problem in the prior art that the metal powder is easily oxidized is solved, and it is suitable for the field of metal anti-oxidation.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 12, 2024
    Inventors: Yongyang SUN, Yuping LI, Yuntao JIANG, Yunyi ZHANG, Changzheng GUO