Patents by Inventor Haijun ZHENG

Haijun ZHENG 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: 20220011008
    Abstract: The disclosure relates to the technical field of air ducts, and in particular to a weather-resistant plant fiber-reinforced air duct with a multi-layer wall, and a preparation method thereof. The weather-resistant plant fiber-reinforced air duct with a multi-layer wall includes an outer isolation layer, a plant fiber-reinforced thermal insulation layer, a moisture-proof layer and a sealing layer that are arranged in sequence from inside to outside. The plant fiber-reinforced thermal insulation layer is prepared by the paving and laminating of surface fiber foam materials and core fiber foam materials or by the winding and molding of glass fibers and plant fibers. An outer isolation layer is adopted to protect the plant fiber-reinforced thermal insulation layer from being damaged by rubbing, and the moisture-proof layer and the sealing layer are adopted to ensure that the air does not leak out.
    Type: Application
    Filed: July 8, 2020
    Publication date: January 13, 2022
    Inventors: Haitao CHENG, Wenfu ZHANG, Ge WANG, Cuicui WANG, Shaohua GU, Haijun ZHENG
  • Patent number: D1070459
    Type: Grant
    Filed: September 28, 2023
    Date of Patent: April 15, 2025
    Assignee: SHENZHEN GAOFA GAS CO., LTD.
    Inventors: Haijun Zheng, Rufeng Xu, Zhihua Tu, Chia-Hsing Lien