Patents by Inventor Xuejun Long

Xuejun Long 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).

  • Chain, continuous and no-waste method for degumming and fiber-separating the ramie
    Patent number: 9206544
    Abstract: The present invention relates to a chain, continuous and no-waste method for degumming and fiber-separating the ramie, including anaerobic circle step, in which the raw fibers after the waste alkali bath step are immersed in the anaerobic water pool; aerobic circle step, in which the raw fibers after the anaerobic circle step are immersed in the aerobic water pool; alkali-hydrogen peroxide one bath scouring-bleaching step, in which the raw fibers after the aerobic circle step are immersed in a combined solution of NaOH and H2O2; and the treatment by a fiber-separating and washing device followed by the immersion in the cellulase solution. In the present invention, the ramie degumming process and the degumming wastewater treatment are performed integratively, and the degumming wastewater is completely recycled after treatment.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: December 8, 2015
    Assignee: WUHAN TEXTILE UNIVERSITY
    Inventors: Qingfu Zeng, Gongbing Su, Xuejun Long, Fei Pan, Haiying Chen, Qian Wang, Honggao Chen, Yongming Cui, Ping Zhang, Jin Li, Jun Wang
  • CHAIN, CONTINUOUS AND NO-WASTE METHOD FOR DEGUMMING AND FIBER-SEPARATING THE RAMIE
    Publication number: 20150240414
    Abstract: The present invention relates to a chain, continuous and no-waste method for degumming and fiber-separating the ramie, including anaerobic circle step, in which the raw fibers after the waste alkali bath step are immersed in the anaerobic water pool; aerobic circle step, in which the raw fibers after the anaerobic circle step are immersed in the aerobic water pool; alkali-hydrogen peroxide one bath scouring-bleaching step, in which the raw fibers after the aerobic circle step are immersed in a combined solution of NaOH and H2O2; and the treatment by a fiber-separating and washing device followed by the immersion in the cellulase solution. In the present invention, the ramie degumming process and the degumming wastewater treatment are performed integratively, and the degumming wastewater is completely recycled after treatment.
    Type: Application
    Filed: August 22, 2014
    Publication date: August 27, 2015
    Inventors: Qingfu Zeng, Gongbing Su, Xuejun Long, Fei Pan, Haiying Chen, Qian Wang, Honggao Chen, Yongming Cui, Ping Zhang, Jin Li, Jun Wang