Patents by Inventor Jian-Bang Jheng

Jian-Bang Jheng 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).

  • PROCESSES AND INTERMEDIATES FOR THE PREPARATIONS OF CARBOPROST AND CARBOPROST TROMETHAMINE, AND CARBOPROST TROMETHAMINE PREPARED THEREFROM
    Publication number: 20230131316
    Abstract: The invention relates to processes for preparing Carboprost or Carboprost Tromethamine, and intermediates prepared from the process, and 5,6-trans isomer free Carboprost or Carboprost Tromethamine prepared therefrom. The invention also relates to a novel crystalline form of Carboprost Tromethamine.
    Type: Application
    Filed: December 27, 2022
    Publication date: April 27, 2023
    Applicant: CHIROGATE INTERNATIONAL INC.
    Inventors: SHIH-YI WEI, MIN-KUAN HSU, JIAN-BANG JHENG
  • PROCESSES AND INTERMEDIATES FOR THE PREPARATIONS OF CARBOPROST AND CARBOPROST TROMETHAMINE, AND CARBOPROST TROMETHAMINE PREPARED THEREFROM
    Publication number: 20230097470
    Abstract: The invention relates to processes for preparing Carboprost or Carboprost Tromethamine, and intermediates prepared from the process, and 5,6-trans isomer free Carboprost or Carboprost Tromethamine prepared therefrom. The invention also relates to a novel crystalline form of Carboprost Tromethamine.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 30, 2023
    Applicant: CHIROGATE INTERNATIONAL INC.
    Inventors: SHIH-YI WEI, MIN-KUAN HSU, JIAN-BANG JHENG
  • Treprostinil monohydrate crystals and methods for preparation thereof
    Patent number: 11447440
    Abstract: Novel crystalline forms of Treprostinil monohydrate, a mixture including the same, and preparation methods thereof.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: September 20, 2022
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng, Chun Hsieh
  • Efficient crystallization process for preparing ultrapure Treprostinil and crystal prepared therefrom
    Patent number: 11339110
    Abstract: There is provided a crystalline Form I of anhydrous Treprostinil and processes for the preparation thereof. The crystalline Form I of anhydrous Treprostnil is a stable crystalline form, which can provide steady physicochemical properties for pharmaceutical formulations, and is advantageous widely and safety used in storage, shipment, and handling for commercially considerations.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: May 24, 2022
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng, Ming-Kun Hsu, Min-Kuan Hsu, Tzyh-Mann Wei
  • TREPROSTINIL MONOHYDRATE CRYSTALS AND METHODS FOR PREPARATION THEREOF
    Publication number: 20220135511
    Abstract: Novel crystalline forms of Treprostinil monohydrate, a mixture including the same, and preparation methods thereof.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 5, 2022
    Applicant: CHIROGATE INTERNATIONAL INC.
    Inventors: SHIH-YI WEI, JIAN-BANG JHENG, CHUN HSIEH
  • EFFICIENT CRYSTALLIZATION PROCESS FOR PREPARING ULTRAPURE TREPROSTINIL AND CRYSTAL PREPARED THEREFROM
    Publication number: 20210188757
    Abstract: There is provided a crystalline Form I of anhydrous Treprostinil and processes for the preparation thereof. The crystalline Form I of anhydrous Treprostnil is a stable crystalline form, which can provide steady physicochemical properties for pharmaceutical formulations, and is advantageous widely and safety used in storage, shipment, and handling for commercially considerations.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Applicant: CHIROGATE INTERNATIONAL INC.
    Inventors: SHIH-YI WEI, JIAN-BANG JHENG, MING-KUN HSU, MIN-KUAN HSU, TZYH-MANN WEI
  • Crystals of intermediate for benzindene prostaglandins and methods for preparation thereof
    Patent number: 10787416
    Abstract: Stable crystalline Form I and Form II of compound (I) and methods for preparation thereof are provided, which present advantages in storage, formulation, shipment and handling for commercial considerations.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 29, 2020
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng
  • Hexadecyl Treprostinil crystals and methods for preparation thereof
    Patent number: 10781160
    Abstract: There is provided stable crystalline Form I and Form II of Hexadecyl Treprostinil (C16TR) and processes for the preparation thereof. The stable crystalline Form I and Form II of Hexadecyl Treprostinil present advantages in storage, formulation, shipment and handling for commercially considerations.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: September 22, 2020
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng
  • Beraprost-314d crystals and methods for preparation thereof
    Patent number: 10577340
    Abstract: The present invention provides crystalline Forms II and III of Beraprost-314d, and processes for the preparation thereof.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 3, 2020
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng
  • Beraprost-314d monohydrate crystals and methods for preparation thereof
    Patent number: 10577341
    Abstract: The present invention provides a monohydrated form of Beraprost-314d, and a novel crystalline form of Beraprost-314d monohydrate, and processes for the preparation thereof.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: March 3, 2020
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng
  • Lubiprostone crystals and methods for preparing the same
    Patent number: 10253011
    Abstract: This present invention relates to novel Lubiprostone crystals and methods for preparing the same. The preparation methods provided by the invention can effectively reduce or eliminate impurity in the obtained Lubiprostone crystals.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: April 9, 2019
    Assignee: CHIROGATE INTERNATIONAL INC.
    Inventors: Shih-Yi Wei, Jian-Bang Jheng