Patents by Inventor Honggang He

Honggang He 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).

  • Method for extracting epsilon-polylysine and its hydrochloride salt from fermentation broth
    Patent number: 10669309
    Abstract: The present invention provides a method for extracting ?-polylysine (?-PL) and its hydrochloride salt from fermentation broth, which belongs to the field of bio-separation engineering. ?-PL and its hydrochloride salt are produced from fermentation broth through sequential solid-liquid separation, ultrafiltration, two-stage ion exchange, nanofiltration, evaporation concentration and drying techniques. Technologies of membrane filtration and two-stage ion exchange are applied to the preparation of ?-PL and its hydrochloride salt in the present invention, and the invention are characterized by reduced cost, improved automation, and increased product yield and purity, and the method of the present invention would be more suitable for industrial production.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: June 2, 2020
    Assignee: Jiangnan University
    Inventors: Xusheng Chen, Zhonggui Mao, Jianhua Zhang, Hongjian Zhang, Ke Wang, Honggang He
  • Method for extracting epsilon-polylysine and its hydrochloride salt from fermentation broth
    Publication number: 20180127462
    Abstract: The present invention provides a method for extracting ?-polylysine (?-PL) and its hydrochloride salt from fermentation broth, which belongs to the field of bio-separation engineering. ?-PL and its hydrochloride salt are produced from fermentation broth through sequential solid-liquid separation, ultrafiltration, two-stage ion exchange, nanofiltration, evaporation concentration and drying techniques. Technologies of membrane filtration and two-stage ion exchange are applied to the preparation of ?-PL and its hydrochloride salt in the present invention, and the invention are characterized by reduced cost, improved automation, and increased product yield and purity, and the method of the present invention would be more suitable for industrial production.
    Type: Application
    Filed: August 15, 2017
    Publication date: May 10, 2018
    Inventors: Xusheng Chen, Zhonggui Mao, Jianhua Zhang, Hongjian Zhang, Ke Wang, Honggang He