Patents by Inventor Chenggang LIN

Chenggang LIN 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).

  • 3-HYDROXY-5-PREGNANE-20-ONE DERIVATIVE AND USE THEREOF
    Publication number: 20220289788
    Abstract: Provided in the present invention are a 3-hydroxyl-5-pregnane-20-one derivative as shown in formula I or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition comprising the derivative or the pharmaceutically acceptable salt thereof. The derivative or the pharmaceutically acceptable salt thereof or the pharmaceutical composition comprising the above-mentioned derivative or salt of the present invention can be used to prepare a drug for treating a disease caused by abnormalities in the central nervous system.
    Type: Application
    Filed: August 7, 2020
    Publication date: September 15, 2022
    Inventors: Fei LIU, Gang WU, Chenggang LIN, Xiaobo WANG, Xiaoqiang WANG, Ruzhi WANG, Bin ZHU, Kongchao XU, Xiaoyan SUN, Jun CAI, Lin WANG, Weihua JIANG, Minqiang ZHENG
  • Donepezil derivative and use thereof
    Patent number: 10632111
    Abstract: The present invention relates to a donepezil derivative of general formula (I) or a pharmaceutically acceptable salt thereof, wherein R in the formula is as disclosed herein; and a method for preparation thereof; and a composition comprising an effective amount of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof. The present invention also relates to use of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof in preparing a medicament for treating a disease resulted from an abnormality in acetylcholinesterase activity.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: April 28, 2020
    Assignee: NANJING NORATECH PHARMACEUTICALS CO., LTD.
    Inventors: Fei Liu, Cuixia Zhang, Chenggang Lin, Chunyan Zhou, Pan Chen, Wei Wang, Lulu Wang
  • Donepezil derivative and use thereof
    Patent number: 10080746
    Abstract: The present invention relates to a donepezil derivative of general formula (I) or a pharmaceutically acceptable salt thereof, wherein R in the formula is as disclosed herein; and a method for preparation thereof; and a composition comprising an effective amount of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof. The present invention also relates to use of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof in preparing a medicament for treating a disease resulted from an abnormality in acetylcholinesterase activity.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: September 25, 2018
    Assignee: NORATECH PHARMACEUTICALS, INC.
    Inventors: Fei Liu, Cuixia Zhang, Chenggang Lin, Chunyan Zhou, Pan Chen, Wei Wang, Lulu Wang
  • DONEPEZIL DERIVATIVE AND USE THEREOF
    Publication number: 20180250278
    Abstract: The present invention relates to a donepezil derivative of general formula (I) or a pharmaceutically acceptable salt thereof, wherein R in the formula is as disclosed herein; and a method for preparation thereof; and a composition comprising an effective amount of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof. The present invention also relates to use of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof in preparing a medicament for treating a disease resulted from an abnormality in acetylcholinesterase activity.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Applicant: NORATECH PHARMACEUTICALS, INC.
    Inventors: Fei LIU, Cuixia ZHANG, Chenggang LIN, Chunyan ZHOU, Pan CHEN, Wei WANG, Lulu WANG
  • DONEPEZIL DERIVATIVE AND USE THEREOF
    Publication number: 20170319561
    Abstract: The present invention relates to a donepezil derivative of general formula (I) or a pharmaceutically acceptable salt thereof, wherein R in the formula is as disclosed herein; and a method for preparation thereof; and a composition comprising an effective amount of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof. The present invention also relates to use of a compound of the general formula (I) or a pharmaceutically acceptable salt thereof in preparing a medicament for treating a disease resulted from an abnormality in acetylcholinesterase activity.
    Type: Application
    Filed: November 26, 2015
    Publication date: November 9, 2017
    Applicant: NORATECH PHARMACEUTICALS, INC.
    Inventors: Fei LIU, Cuixia ZHANG, Chenggang LIN, Chunyan ZHOU, Pan CHEN, Wei WANG, Lulu WANG