Patents by Inventor Qingrui WANG

Qingrui WANG 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).

  • Patent number: 11679552
    Abstract: A direct ink writing device and method for a bias-controllable continuous fiber reinforced composite material are provided. The device includes a cartridge fixed by an external device, a bottom of the cartridge is connected to a nozzle. A piston is arranged in the cartridge, the piston is provided with a chamber for containing sealing liquid and a capillary for a continuous fiber to pass through. The centers of an inner circumference and an outer circumference of the cartridge do not coincide with each other. The bias position of the continuous fiber in the composite material is achieved using the piston, and each filament of composite material is printed in steps of rotation, extrusion, revolution and curing. A structure produced according to the disclosure has high mechanical properties and outstanding intelligent properties, and the bias position of the continuous fiber material in the structure can be accurately adjusted.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: June 20, 2023
    Inventors: Xiaoyong Tian, Qingrui Wang, Daokang Zhang, Dichen Li
  • Publication number: 20210387408
    Abstract: A direct ink writing device and method for a bias-controllable continuous fiber reinforced composite material are provided. The device includes a cartridge fixed by an external device, a bottom of the cartridge is connected to a nozzle. A piston is arranged in the cartridge, the piston is provided with a chamber for containing sealing liquid and a capillary for a continuous fiber to pass through. The centers of an inner circumference and an outer circumference of the cartridge do not coincide with each other. The bias position of the continuous fiber in the composite material is achieved using the piston, and each filament of composite material is printed in steps of rotation, extrusion, revolution and curing. A structure produced according to the disclosure has high mechanical properties and outstanding intelligent properties, and the bias position of the continuous fiber material in the structure can be accurately adjusted.
    Type: Application
    Filed: February 23, 2021
    Publication date: December 16, 2021
    Applicant: Xi'an Jiaotong University
    Inventors: Xiaoyong TIAN, Qingrui WANG, Daokang ZHANG, Dichen LI
  • Publication number: 20210363095
    Abstract: The disclosure is about a method capable of realizing the preparation and in-situ separation of the oligomeric ricinoleate, which uses the ricinoleic acid as raw material, and uses a protonic acid-type ionic liquid as a catalyst to cause the dehydration and esterification reactions between ricinoleic acid molecules. By continuously distilling out the generated water under a reduced pressure, the oligomeric ricinoleate with a polymerization degree of 2 to 10 is obtained. After the reaction, a method of washing with water or static stratification is selected to recover the catalyst according to the miscibility of the catalyst and reaction system. In his disclosure, renewable raw materials are used, the process is clean and pollution-free, and the operation is simple.
    Type: Application
    Filed: June 5, 2021
    Publication date: November 25, 2021
    Inventors: Feng YE, Liangnian HE, Hongru LI, Gang LI, Fei YOU, Qingrui WANG, Song GAO, Xing HE, Xiaoying CUI