Patents by Inventor Yuhai ZHOU

Yuhai ZHOU 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).

  • SILICON NITRIDE CERAMIC TOOL COMPRISING DIAMOND FILM AND METHOD OF PREPARING THE SAME
    Publication number: 20210237168
    Abstract: A cutting tool, including a silicon nitride (Si3N4) ceramic substrate, and a diamond film coated on the surface of the Si3N4 ceramic substrate. The diamond film has a thickness of 7-12 ?m. The cutting tool includes a tool nose, a blade, and a handle. The blade has a rake angle ? of 5-15°, a clearance angle ? of 10-14°, and a helix angle of 15-45°. The blade includes four cutting edges.
    Type: Application
    Filed: March 29, 2021
    Publication date: August 5, 2021
    Inventors: Chengyong WANG, Yuhai ZHOU, Lijuan ZHENG