Patents by Inventor Qinpei LI

Qinpei LI 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: 12331282
    Abstract: Provided are a Candida tropicalis strain Am2525, with the preservation number thereof being CCTCC NO: M 2019419, and a method for producing long-chain dicarboxylic acids by means of fermenting the strain. The method for producing the long-chain dicarboxylic acids comprises preparing a seed solution by means of the Candida tropicalis strain Am2525 and producing the long-chain dicarboxylic acids via fermentation of the seed solution. Compared with the parent, the Candida tropicalis strain Am2525 has an enhanced resistance to the toxicity of a substrate decane, improves the productivity of long-chain dicarboxylic acids, reduces the cost of production, subsequent separation and purification are simple, and the fermentation production process is easy to implement on a large scale.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: June 17, 2025
    Assignees: CATHAY BIOTECH INC., CIBT AMERICA INC.
    Inventors: Jianglin Wang, Wei Li, Qinpei Li, Wenxiao Jiang, Shuya Min, Xiucai Liu
  • Publication number: 20230203431
    Abstract: Provided are a Candida tropicalis strain Am2525, with the preservation number thereof being CCTCC NO: M 2019419, and a method for producing long-chain dicarboxylic acids by means of fermenting the strain. The method for producing the long-chain dicarboxylic acids comprises preparing a seed solution by means of the Candida tropicalis strain Am2525 and producing the long-chain dicarboxylic acids via fermentation of the seed solution. Compared with the parent, the Candida tropicalis strain Am2525 has an enhanced resistance to the toxicity of a substrate decane, improves the productivity of long-chain dicarboxylic acids, reduces the cost of production, subsequent separation and purification are simple, and the fermentation production process is easy to implement on a large scale.
    Type: Application
    Filed: January 16, 2020
    Publication date: June 29, 2023
    Applicants: CATHAY BIOTECH INC., CIBT AMERICA INC.
    Inventors: Jianglin WANG, Wei LI, Qinpei LI, Wenxiao JIANG, Shuya MIN, Xiucai LIU