Patents by Inventor Xiangqi QIU

Xiangqi QIU 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: 11111516
    Abstract: Provided are malR-knockout Bacillus licheniformis strain, a construction method and a use. Using a genetic engineering method, gene, namely, the malR gene, which is in charge of conducting the transcription of the carbon metabolism transcription factor MalR, in the genome of Bacillus licheniformis DW2 is knocked out, thereby successfully obtaining Bacillus licheniformis DW2?malR, from which the malR gene has been deleted. In comparison with Bacillus licheniformis DW2, the strain obtained by the construction can improve the Bacitracin yield in a fermentation broth during Bacitracin fermentation by at least 23%.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: September 7, 2021
    Inventors: Shouwen Chen, Fei Wu, Dongbo Cai, Bowen Zhang, Junhui Li, Lijun Lou, Xiangqi Qiu
  • Publication number: 20210095324
    Abstract: Provided are malR-knockout Bacillus licheniformis strain, a construction method and a use. Using a genetic engineering method, gene, namely, the malR gene, which is in charge of conducting the transcription of the carbon metabolism transcription factor MalR, in the genome of Bacillus licheniformis DW2 is knocked out, thereby successfully obtaining Bacillus licheniformis DW2?malR, from which the malR gene has been deleted. In comparison with Bacillus licheniformis DW2, the strain obtained by the construction can improve the Bacitracin yield in a fermentation broth during Bacitracin fermentation by at least 23%.
    Type: Application
    Filed: August 5, 2019
    Publication date: April 1, 2021
    Inventors: Shouwen CHEN, Fei WU, Dongbo CAI, Bowen ZHANG, Junhui LI, Lijun LOU, Xiangqi QIU