Patents by Inventor Wanwan Zhang

Wanwan Zhang 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: 20240087343
    Abstract: A license plate classification method, a license plate classification apparatus and a computer-readable storage medium are provided. The method includes: performing a license plate recognition process on a first license plate image to obtain a license plate recognition result; performing an encoding process on the license plate recognition result to obtain a first license plate feature; performing a feature extraction process on the first license plate image to obtain a second license plate feature; and processing the first license plate feature and the second license plate feature through a classification network to obtain a first license plate classification result. In this way, an accuracy of license plate classification is improved.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Jiale XUE, Jingyu DUN, Yayun WANG, Wanwan ZHANG, Yikun LI
  • Publication number: 20240035197
    Abstract: The present disclosure discloses a crystal puller, a method for manufacturing a monocrystalline silicon ingot and a mono-crystalline silicon ingot. The crystal puller includes a pulling mechanism; a first heat treater which is configured to perform heat treatment on the mono-crystalline silicon ingot with a first heat treatment temperature at which BMD in the mono-crystalline silicon ingot be ablated; and a second heat treater which is configured to perform heat treatment on the monocrystalline silicon ingot with a second heat treatment temperature at which formation of BMD in the mono-crystalline silicon ingot is induced. The pulling mechanism is further configured to move the monocrystalline ingot along the direction of crystal growth to a position where heat treatment is performed on a tail section by the first heat treater and heat treatment is performed on a head section by the second heat treater.
    Type: Application
    Filed: September 29, 2022
    Publication date: February 1, 2024
    Inventors: Wanwan ZHANG, Yonghee MUN
  • Publication number: 20240018689
    Abstract: Embodiments of the present disclosure disclose a crystal puller for pulling a monocrystalline silicon ingot comprising a heater configured with a heat treatment chamber. The heater is arranged in the crystal puller such that the monocrystalline silicon ingot is accessible to the heat treatment chamber by moving along a direction of crystal growth.
    Type: Application
    Filed: September 28, 2022
    Publication date: January 18, 2024
    Inventors: Peng Xu, Wanwan Zhang