Patents by Inventor Shupeng Liu

Shupeng Liu 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).

  • Quantum-dot-based measuring system and method
    Patent number: 11644479
    Abstract: A quantum-dot-based measuring system is disclosed. The quantum-dot-based measuring system includes a laser to emit excitation light, an optical fiber probe including a tail end and a tapered tip, and the tapered tip of the optical fiber probe is attached with one or more quantum dots, and the excitation light is injected from the tail end of the optical fiber probe and emitted from the tapered tip to a sample to be detected, an objective lens to collect optical signal reflected by the sample and a spectrometer to receive the optical signal.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: May 9, 2023
    Assignee: SHANGHAI UNIVERSITY
    Inventors: Na Chen, Shaoying Li, Tingyun Wang, Zhenyi Chen, Shupeng Liu
  • Recombinant microorganism for producing L-valine, construction method and application thereof
    Publication number: 20230084158
    Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through enhancing amino acid dehydrogenase activity of L-valine fermentation strain, and/or activating an Entner-Doudoroff (ED) metabolic pathway, a problem in L-valine fermentation process that reducing power is unbalanced is solved, thereby the titer and yield of L-valine produced by Escherichia coli are improved, and L-valine was produced by one-step anaerobic fermentation.
    Type: Application
    Filed: December 18, 2020
    Publication date: March 16, 2023
    Inventors: Xueli ZHANG, Henghua GUO, Pingping LIU, Dongzhu ZHANG, Jinlei TANG, Chengxiu HAN, Siqing TANG, Shupeng LIU, Yanhe MA
  • Recombinant microorganism for producing L-valine, construction method and application thereof
    Publication number: 20230081444
    Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through transferring an amino acid dehydrogenase gene and/or activating activity of a transhydrogenase and/or a NAD kinase, reducing power of NADPH in cell is increased, the titer and yield of L-valine generated by Escherichia coli are improved, and the production of L-valine by one-step anaerobic fermentation is achieved.
    Type: Application
    Filed: December 18, 2020
    Publication date: March 16, 2023
    Inventors: Xueli ZHANG, Henghua GUO, Pingping LIU, Dongzhu ZHANG, Jinlei TANG, Chengxiu HAN, Siqing TANG, Shupeng LIU, Yanhe MA
  • Recombinant microorganism for producing L-valine, construction method and application thereof
    Publication number: 20230072835
    Abstract: Related are a recombinant microorganism for producing L-valine, a construction method and an application thereof. Through transferring an acetohydroxy acid reductoisomerase gene and/or an amino acid dehydrogenase gene into a microorganism, and enhancing activity of an acetohydroxy acid reductoisomerase and/or an amino acid dehydrogenase, the titer and yield of L-valine generated by Escherichia coli may be improved, and L-valine was produced by one-step anaerobic fermentation.
    Type: Application
    Filed: December 18, 2020
    Publication date: March 9, 2023
    Inventors: Xueli ZHANG, Henghua GUO, Pingping LIU, Dongzhu ZHANG, Jinlei TANG, Chengxiu HAN, Siqing TANG, Shupeng LIU, Yanhe MA
  • QUANTUM-DOT-BASED MEASURING SYSTEM AND METHOD
    Publication number: 20210382086
    Abstract: A quantum-dot-based measuring system is disclosed. The quantum-dot-based measuring system includes a laser to emit excitation light, an optical fiber probe including a tail end and a tapered tip, and the tapered tip of the optical fiber probe is attached with one or more quantum dots, and the excitation light is injected from the tail end of the optical fiber probe and emitted from the tapered tip to a sample to be detected, an objective lens to collect optical signal reflected by the sample and a spectrometer to receive the optical signal.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 9, 2021
    Applicant: SHANGHAI UNIVERSITY
    Inventors: Na CHEN, Shaoying LI, Tingyun WANG, Zhenyi CHEN, Shupeng Liu