Patents by Inventor Ningyi Du

Ningyi Du 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).

  • Publication number: 20210369030
    Abstract: A carpet metal sticker for fixing a carpet and a carpet fixing structure, the carpet fixing structure is used to fix at least four carpet. The carpet includes a composite back layer. The carpet fixing structure includes at least one carpet metal sticker. Four corners of the four carpets are respectively attached to the four hook fixing-carpet areas. A length of each of the hook needles taken along an extension direction thereof is equal to a thickness of the composite back layer. When the carpet is fixed onto the hook fixing-carpet areas, the hook needles are inserted into the composite back layer and is bent and fallen, and the hook needles are contained in the composite back layer. The hook needle can buckle the composite back layer of the carpet so as to fix the carpet onto the carpet metal sticker and avoid the phenomenon of warping and displacement of the carpet.
    Type: Application
    Filed: July 16, 2020
    Publication date: December 2, 2021
    Inventors: Ningyi Du, Yanpeng Ma, Wang Zhang, Fushun Ma