Patents by Inventor Xiangqun LI

Xiangqun 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).

  • Publication number: 20240189425
    Abstract: The present disclosure provides a chimeric antigen receptor (CAR) molecule comprising a modified hinge and transmembrane domain (HTM-1), wherein the modified hinge and transmembrane domain comprises the amino acid sequence of SEQ ID NO:2. Cells expressing CAR with the modified HTM-1 domain disclosed herein are expected to have enhanced anti-tumor activities with reduced release of pro-inflammatory cytokines.
    Type: Application
    Filed: February 21, 2024
    Publication date: June 13, 2024
    Applicant: Orgenesis Inc.
    Inventors: BUO CHEN, Xiangqun LI
  • Patent number: 11978533
    Abstract: An improved peptide library preparation method is described for constructing complete virtual peptide libraries such as a complete virtual tripeptide library, tetrapeptide library, pentapeptide library, hexapeptide library, heptapeptide library, or a complete octapeptide library, etc. The method includes constructing an expression vector for the expression of cyclic peptides. Each cyclic peptide displays an array of peptides of different sizes and sequences, and the number of cyclic peptides needed for constructing a complete virtual peptide library can be dramatically reduced compared with conventional chemical peptide synthesis. Furthermore, the cyclic peptide libraries can be readily reproduced by the expression and purification of the cyclic peptides using the constructed gene libraries.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 7, 2024
    Assignee: HUNAN ZONSEN PEPLIB BIOTECH CO., LTD
    Inventors: Zhuying Wang, Xiangqun Li
  • Publication number: 20230381230
    Abstract: The present disclosure provides a chimeric antigen receptor (CAR) molecule comprising a modified hinge domain, wherein the hinge domain comprises the amino acid sequence of SEQ ID NO:1. Cells expressing a CAR comprising the modified hinge domain disclosed herein are shown to have enhanced anti-tumor activities with reduced release of pro-inflammatory cytokines.
    Type: Application
    Filed: October 27, 2022
    Publication date: November 30, 2023
    Applicants: Orgenesis Inc., Broaden BioScience and Technology Corp.
    Inventors: BUO CHEN, Xiangqun LI, Ang Zhang
  • Patent number: 11425044
    Abstract: This technology enables a dynamic host configuration protocol (“DHCP”) Layer 2 relay in a Virtual Extensible Local Area Network (“VXLAN”) overlay fabric. A host device broadcasts a configuration request, such as a DHCP discover, across an Ethernet virtual private network (“EVPN”) overlay fabric. The DHCP discover is intercepted by a VXLAN Tunnel End Point (“VTEP”) device with Layer 2 bridging functionality. The VTEP device selects a centralized gateway (“CGW”) device with Layer 3 relay functionality as a destination for the DHCP discover. The VTEP device encapsulates the DHCP discover with a unicast VXLAN header comprising the media access control (“MAC”) address of the CGW device and transmits the encapsulated DHCP discover to the CGW device, resolving the destination address associated with the broadcast. The CGW device transmits the DHCP discover to an Internet Protocol (“IP”) address associated with a DHCP server that is external to the EVPN overlay fabric.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: August 23, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Ramchander R. Nadipally, Ajinkya Abhay Chouthai, Rajagopal Venkatraman, Xiangqun Li, Rahul Kachalia
  • Publication number: 20220124037
    Abstract: This technology enables a dynamic host configuration protocol (“DHCP”) Layer 2 relay in a Virtual Extensible Local Area Network (“VXLAN”) overlay fabric. A host device broadcasts a configuration request, such as a DHCP discover, across an Ethernet virtual private network (“EVPN”) overlay fabric. The DHCP discover is intercepted by a VXLAN Tunnel End Point (“VTEP”) device with Layer 2 bridging functionality. The VTEP device selects a centralized gateway (“CGW”) device with Layer 3 relay functionality as a destination for the DHCP discover. The VTEP device encapsulates the DHCP discover with a unicast VXLAN header comprising the media access control (“MAC”) address of the CGW device and transmits the encapsulated DHCP discover to the CGW device, resolving the destination address associated with the broadcast. The CGW device transmits the DHCP discover to an Internet Protocol (“IP”) address associated with a DHCP server that is external to the EVPN overlay fabric.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 21, 2022
    Inventors: Ramchander R. Nadipally, Ajinkya Abhay Chouthai, Rajagopal Venkatraman, Xiangqun Li, Rahul Kachalia
  • Publication number: 20200135299
    Abstract: An improved peptide library preparation method is described for constructing complete virtual peptide libraries such as a complete virtual tripeptide library, tetrapeptide library, pentapeptide library, hexapeptide library, heptapeptide library, or a complete octapeptide library, etc. The method includes constructing an expression vector for the expression of cyclic peptides. Each cyclic peptide displays an array of peptides of different sizes and sequences, and the number of cyclic peptides needed for constructing a complete virtual peptide library can be dramatically reduced compared with conventional chemical peptide synthesis. Furthermore, the cyclic peptide libraries can be readily reproduced by the expression and purification of the cyclic peptides using the constructed gene libraries.
    Type: Application
    Filed: April 26, 2017
    Publication date: April 30, 2020
    Inventors: Zhuying Wang, Xiangqun Li
  • Publication number: 20180179519
    Abstract: An improved peptide library preparation method is described for constructing complete peptide libraries such as a complete tripeptide library, tetrapeptide library, pentapeptide library, hexapeptide library, heptapeptide library, or a complete octapeptide library, etc. The method includes constructing an expression vector for the expression of tagged peptides. Each tagged peptide contains an array of peptides of different sizes, and the number of peptides in a complete peptide library can be dramatically reduced relative to conventional chemical peptide synthesis. Furthermore, the libraries can be readily reproduced. The improved peptide library preparation method can particularly be used, for example, to construct a complete pentapeptide library. Other related methods and related expression vectors are also described.
    Type: Application
    Filed: July 3, 2015
    Publication date: June 28, 2018
    Inventors: Zhuying Wang, Xiangqun LI
  • Publication number: 20120295294
    Abstract: An improved method is described for the synthesis of aspartame using a condensation reaction between the alpha-carboxyl group of the L-aspartic acid and the amino group of the methyl L-phenylalaninate catalyzed by an enzyme. The method allowed efficient and cost effective production of aspartame. A method of identifying an enzyme useful for preparing aspartame is also described.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: GENSCRIPT NANJING
    Inventors: Zhuying WANG, Jian SUN, Xiangqun LI, Fang Liang ZHANG