Patents by Inventor Po ZOU

Po ZOU 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).

  • Patent number: 10703724
    Abstract: The present disclosure relates to novel crystalline forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid and processes for preparation and uses thereof. Crystalline form CS1, form CS2 and form CS8 of the present disclosure can be used for preparing drugs treating anemia, which providing new choices for preparing drugs of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid, and having very important value for drug development.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 7, 2020
    Assignee: Crystal Pharmaceutical (Suzhou) Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Jinqiu Wang, Xiaoyu Zhang
  • Patent number: 10626135
    Abstract: The present disclosure relates to novel crystalline forms of a sodium-glucose co-transporter inhibitor drug (Sotagliflozin), processes for preparation and use thereof. The present disclosure also relates to pharmaceutical composition comprises novel crystalline forms of Sotagliflozin and use of novel crystalline forms and pharmaceutical composition of Sotagliflozin for preparing drugs for treating diseases. The crystalline forms provided by the present disclosure have advantages of good stability, relatively low hygroscopicity, suitability for process development and post-treatment, simple processes for preparation, low cost, and has significant value for future drug optimization and development.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 21, 2020
    Assignee: Crystal Pharmaceutical (Suzhou) Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Kai Liu, Xiaoyu Zhang
  • Patent number: 10604521
    Abstract: The present disclosure relates to novel crystalline forms of PLX3397 hydrochloride and processes for preparation thereof. The crystalline forms of PLX3397 hydrochloride provided by the present disclosure have higher solubility, larger particle size which is favorable for separation in the subsequent production process, and good stability, especially mechanical stability. These novel crystalline forms of PLX3397 hydrochloride provide a better choice for PLX3397 drug products and are of great value for drug development.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 31, 2020
    Assignee: Crystal Pharmaceuticals (Suzhou) Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Xiaoyu Zhang
  • Publication number: 20200095203
    Abstract: The present disclosure relates to novel crystalline forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid and processes for preparation and uses thereof. Crystalline form CS1, form CS2 and form CS8 of the present disclosure can be used for preparing drugs treating anemia, which providing new choices for preparing drugs of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl] amino} acetic acid, and having very important value for drug development.
    Type: Application
    Filed: December 13, 2017
    Publication date: March 26, 2020
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Jinqiu Wang, Xiaoyu Zhang
  • Patent number: 10472369
    Abstract: The present disclosure relates to novel crystalline form I, form II and form III of 6-(1H-indazol-6-yl)-N-[4-(4-morpholinyl)phenyl]imidazo [1,2-a]pyrazin-8-amine mesylate, and preparation methods and use thereof. Crystalline form I is a dimesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 5.9°±0.2°, 13.5°±0.2° and 21.8°±0.2°. Crystalline form II is a dimesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 15.8°±±0.2°, 17.2°±0.2° and 19.5°±0.2°. Crystalline form III is a monomesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 7.4°±0.2°, 12.9°±0.2° and 19.2°±0.2°. The crystalline forms are more suitable for drug development than prior crystalline forms, and the preparation methods for the crystalline forms are simple and repeatable and have significant value for future drug optimization and development.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 12, 2019
    Assignee: Crystal Pharmatech Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Xiaoyu Zhang
  • Patent number: 10442800
    Abstract: The present disclosure relates to novel crystalline forms of NBI-98854 (as shown in formula I), preparation process and use thereof. The crystalline forms of NBI-98854 provided by the present disclosure, named as Form CS1 and Form CS2, can be used for preparing drug product treating tardive dyskinesia. The crystalline forms of NBI-98854 provided by the present disclosure have pharmaceutically acceptable solubility and hygroscopicity, good stability and are stable during storage, thereby avoiding changes in drug solubility, dissolution rate, bioavailability and efficacy due to polymorph transformation. This provides a new and better choice for the preparation of drug product containing NBI-98854, which has significant value for future drug development.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: October 15, 2019
    Assignee: Crystal Pharmaceutical (Suzhou) Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Kai Liu, Jinqiu Wang, Xiaoyu Zhang
  • Publication number: 20190256510
    Abstract: The present disclosure relates to novel crystalline forms of PLX3397 hydrochloride and processes for preparation thereof. The crystalline forms of PLX3397 hydrochloride provided by the present disclosure have higher solubility, larger particle size which is favorable for separation in the subsequent production process, and good stability, especially mechanical stability. These novel crystalline forms of PLX3397 hydrochloride provide a better choice for PLX3397 drug products and are of great value for drug development.
    Type: Application
    Filed: June 9, 2017
    Publication date: August 22, 2019
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Xiaoyu Zhang
  • Publication number: 20190218209
    Abstract: The present disclosure relates to novel crystalline forms of NBI-98854 (as shown in formula I), preparation process and use thereof. The crystalline forms of NBI-98854 provided by the present disclosure, named as Form CS1 and Form CS2, can be used for preparing drug product treating tardive dyskinesia. The crystalline forms of NBI-98854 provided by the present disclosure have pharmaceutically acceptable solubility and hygroscopicity, good stability and are stable during storage, thereby avoiding changes in drug solubility, dissolution rate, bioavailability and efficacy due to polymorph transformation. This provides a new and better choice for the preparation of drug product containing NBI-98854, which has significant value for future drug development.
    Type: Application
    Filed: June 29, 2017
    Publication date: July 18, 2019
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Kai Liu, Jinqiu Wang, Xiaoyu Zhang
  • Publication number: 20190169219
    Abstract: The present disclosure relates to novel crystalline forms of a sodium-glucose co-transporter inhibitor drug (Sotagliflozin), processes for preparation and use thereof. The present disclosure also relates to pharmaceutical composition comprises novel crystalline forms of Sotagliflozin and use of novel crystalline forms and pharmaceutical composition of Sotagliflozin for preparing drugs for treating diseases. The crystalline forms provided by the present disclosure have advantages of good stability, relatively low hygroscopicity, suitability for process development and post-treatment, simple processes for preparation, low cost, and has significant value for future drug optimization and development.
    Type: Application
    Filed: May 25, 2017
    Publication date: June 6, 2019
    Applicant: CRYSTAL PHARMACEUTICAL (SUZHOU) CO., LTD.
    Inventors: Minhua CHEN, Yanfeng ZHANG, Po ZOU, Kai LIU, Xiaoyu ZHANG
  • Patent number: 10308641
    Abstract: The present disclosure provides crystalline form A of 3-(6-(1-(2, 2-difluorobenzo [d] [1, 3] dioxo-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl) benzoic acid and process of preparation thereof. The crystalline form A has low hygroscopicity, good stability, is convenient to store. It has higher solubility than that of prior art and therefore plays an important role in further optimization and development of the drug.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 4, 2019
    Assignee: Crystal Pharmatech Co., Ltd.
    Inventors: Minhua Chen, Yanfeng Zhang, Kai Liu, Po Zou, Xiaoyu Zhang
  • Publication number: 20190055255
    Abstract: The present disclosure relates to novel crystalline form I, form II and form III of 6-(1H-indazol-6-yl)-N-[4-(4-morpholinyl)phenyl]imidazo [1,2-a]pyrazin-8-amine mesylate, and preparation methods and use thereof. Crystalline form I is a dimesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 5.9°±0.2°, 13.5°±0.2° and 21.8°±0.2°. Crystalline form II is a dimesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 15.8°±±0.2°, 17.2°±0.2° and 19.5°±0.2°. Crystalline form III is a monomesylate, and its X-ray powder diffraction pattern shows characteristic peaks at 2theta values of 7.4°±0.2°, 12.9°±0.2° and 19.2°±0.2°. The crystalline forms are more suitable for drug development than prior crystalline forms, and the preparation methods for the crystalline forms are simple and repeatable and have significant value for future drug optimization and development.
    Type: Application
    Filed: February 24, 2017
    Publication date: February 21, 2019
    Inventors: Minhua Chen, Yanfeng Zhang, Po Zou, Xiaoyu Zhang
  • Publication number: 20180230136
    Abstract: The present disclosure provides crystalline form A of 3-(6-(1-(2, 2-difluorobenzo [d] [1, 3] dioxo-5-yl) cyclopropanecarboxamido)-3-methylpyridin-2-yl) benzoic acid and process of preparation thereof. The crystalline form A has low hygroscopicity, good stability, is convenient to store. It has higher solubility than that of prior art and therefore plays an important role in further optimization and development of the drug.
    Type: Application
    Filed: August 11, 2016
    Publication date: August 16, 2018
    Applicant: CRYSTAL PHARMATECH CO., LTD.
    Inventors: Minhua CHEN, Yanfeng ZHANG, Kai LIU, Po ZOU, Xiaoyu ZHANG