Patents by Inventor Zhirong Li

Zhirong 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).

  • URETERAL STENT AND MANUFACTURING METHOD THEREOF
    Publication number: 20240131308
    Abstract: A ureteral stent and a manufacturing method of a ureteral stent are applied to the technical field of medical instruments, to effectively reduce ureteral stent failure in fluid guiding. The ureteral stent comprises an inner structure (200), and an outer structure (100) sleeved on the inner structure (200), wherein the outer structure (100) is a tube-shaped structure, and the outer structure (100) is made from a first wire (110). The ureteral stent can effectively reduce ureteral stent failure in fluid guiding.
    Type: Application
    Filed: March 24, 2022
    Publication date: April 25, 2024
    Inventors: Aijun Guo, Zhirong Li, Jianjin Wang
  • violaxanthin de-epoxidase enzyme and its uses
    Patent number: 10336989
    Abstract: This disclosure provides Chlamydomonas violaxanthin de-epoxidase (CVDE) gene, polypeptides, and variants thereof as well as host cells that are genetically modified to express a CVDE polypeptide or variant. The disclosure additionally provides methods of producing such a genetically modified host cell and methods of using the cells , e.g., to increase zeaxanthin production.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 2, 2019
    Assignee: The Regents of the University of California
    Inventors: Krishna K. Niyogi, Zhirong Li, Rachel Dent, Graham Peers
  • CHLAMYDOMONAS VIOLAXANTHIN DE-EPOXIDASE ENZYME AND ITS USES
    Publication number: 20180057800
    Abstract: This disclosure provides Chlamydomonas violaxanthin de-epoxidase (CVDE) gene, polypeptides, and variants thereof as well as host cells that are genetically modified to express a CVDE polypeptide or variant. The disclosure additionally provides methods of producing such a genetically modified host cell and methods of using the cells , e.g., to increase zeaxanthin production.
    Type: Application
    Filed: June 16, 2017
    Publication date: March 1, 2018
    Inventors: Krishna K. Niyogi, Zhirong Li, Rachel Dent, Graham Peers