Patents by Inventor Dafeng LI

Dafeng 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).

  • Anti-inflammatory coupling compound drug, and preparation method therefor and use thereof
    Patent number: 12290519
    Abstract: An anti-inflammatory drug compound, and a preparation method therefor and the use thereof. The structural formula of the compound is A-Y—B, wherein A is a group after dehydrogenation of an amine compound having JAK inhibitory activity, Y is a direct connection or —(CH2)-O— or, and B is a group formed by means of dehydroxylation of a carboxy-containing carboxylic acid compound B1, or a group formed by means of dehydrogenation of a hydroxy-containing compound B2. The compound has the special effects of having a strong transdermal property, controlled drug release, high efficacy, etc.
    Type: Grant
    Filed: January 16, 2024
    Date of Patent: May 6, 2025
    Assignee: COVAL BIOPHARMA (SHANGHAI) CO., LTD.
    Inventors: Lichun Feng, Weijiang Zhang, Guolong Wu, Hao Zhang, Dafeng Li
  • DRUG DELIVERY SYSTEM FOR LOCALLY DELIVERING THERAPEUTIC AGENTS AND USES THEREOF
    Publication number: 20240398963
    Abstract: Disclosed herein are drug delivery systems and methods for locally delivering therapeutic agents, and methods for using such drug delivery systems for the treatment of diseases.
    Type: Application
    Filed: September 14, 2022
    Publication date: December 5, 2024
    Inventors: Guolong WU, Weijiang ZHANG, Lichun FENG, Hao ZHANG, Dafeng LI
  • EXTERNAL ANTI-INFLAMMATORY COUPLING COMPOUND DRUG, AND PREPARATION METHOD THEREFOR AND USE THEREOF
    Publication number: 20240197741
    Abstract: An external anti-inflammatory drug compound, and a preparation method therefor and the use thereof. The structural formula of the compound is A-Y—B, wherein A is a group after dehydrogenation of an amine compound having JAK inhibitory activity, Y is a direct connection or —(CH2)—O— or, and B is a group formed by means of dehydroxylation of a carboxy-containing carboxylic acid compound B1, or a group formed by means of dehydrogenation of a hydroxy-containing compound B2. The compound has the special effects of having a strong transdermal property, controlled drug release, high efficacy, etc.
    Type: Application
    Filed: January 16, 2024
    Publication date: June 20, 2024
    Inventors: Lichun FENG, Weijiang ZHANG, Guolong WU, Hao ZHANG, Dafeng LI
  • DRUG DELIVERY SYSTEM FOR LOCALLY DELIVERING THERAPEUTIC AGENTS AND USES THEREOF
    Publication number: 20230256106
    Abstract: Provided herein are drug delivery systems and methods for locally delivering therapeutic agents, and methods for using such drug delivery systems for the treatment of diseases.
    Type: Application
    Filed: July 13, 2021
    Publication date: August 17, 2023
    Inventors: Hao ZHANG, Weijiang ZHANG, Lichun FENG, Guolong WU, Dafeng LI
  • VEHICLE CONTROL METHOD, MOBILE TERMINAL, VEHICLE-MOUNTED DEVICE, AND NETWORK DEVICE
    Publication number: 20230222850
    Abstract: In an example method, a mobile terminal establishes a near-field communication connection to a vehicle-mounted device. The mobile terminal receives first information from a network device, activates an application (app) in response to the first information, and sends a control instruction to the vehicle-mounted device by using the app.
    Type: Application
    Filed: March 15, 2023
    Publication date: July 13, 2023
    Inventor: Dafeng LI
  • Process for preparation of lactone derivatives and intermediates thereof
    Patent number: 10611739
    Abstract: A novel process for the preparation of lactone derivatives, and intermediates thereof is described. The lactone derivatives are important precursors for the synthesis of anti-hepatitis C virus agents, including sofosbuvir.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: April 7, 2020
    Assignee: PHARMARESOURCES (SHANGHAI) CO., LTD.
    Inventors: Ping Chen, Shaoping Peng, Yinqiang Li, Dafeng Li, Xuejun Dong
  • PROCESS FOR PREPARATION OF LACTONE DERIVATIVES AND INTERMEDIATES THEREOF
    Publication number: 20190210981
    Abstract: A novel process for the preparation of lactone derivatives, and intermediates thereof is described. The lactone derivatives are important precursors for the synthesis of anti-hepatitis C virus agents, including sofosbuvir.
    Type: Application
    Filed: August 16, 2016
    Publication date: July 11, 2019
    Inventors: Ping CHEN, Shaoping PENG, Yinqiang LI, Dafeng LI, Xuejun DONG